baber/WOPTO huggingface dataset:
Patent NL-9500390-A (NL)
Inventor: CHEN DAVID YU
IPC: G06F1/32
Filed: 1995-02-28
Abstract: Data for activity in a certain time frame is stored and analysed for processed commands to determine if the computer is receiving data. The processor clock rate is varied to the lower possible frequency when data is input, The processor clock rate is varied to a higher frequency when the computer is not receiving data. The system includes a data storage (2) for receiving data from input devices (1), a comparison circuit (3) and a flip-flop (4) which is set to vary the processor clock rate.
Patent OA-10796-A (OA)
Title: Methods for improving the residual control of mites and prolonging the protection of plants from mite infestations
Inventor: WOOD WILLIAM WAKEFIELD
IPC: A01N43/48
Filed: 1998-06-12
Abstract: The present invention provides methods for improving the residual control of mites and prolonging the protection of plants from mite infestations by applying to the foliage of plants an unsymmetrical 4,6-bis(aryloxy)pyrimidine compound of formula I <CHEM>
Patent OA-11083-A (OA)
Title: Method and arrangement for processing cocoa mass resulting products
Inventor: GUSEK TODD W
IPC: A23L7/10
Filed: 1999-08-05
Abstract: Techniques for processing cocoa mass are provided. In general, the techniques involve solvent extraction of cocoa fat from cocoa mass, to achieve a desirable cocoa butter and low-fat cocoa powder. In one preferred process, the cocoa mass is the result of grinding cocoa nibs, with absence of a mechanical pressing and heating step, to advantage. Preferred products and uses are characterized.
Patent PT-85481-A (PT)
Inventor: PLESTER GEORGE
IPC: G01N/
Filed: 1987-08-04
Abstract: Methods of discriminating between contaminated and uncontaminated containers prior to washing is disclosed characterized by the testing of the residue of the container to determine if the residue is residue of the original product packed in the container. If the residue is not sufficiently similar to the original product, the container is rejected as contaminated.
Patent PT-87771-A (PT)
IPC: F16L33/035
Filed: 1988-06-20
Abstract: 1. Clamp, adapted to be dismounted and re-used, constituted by a metal band (1) wound on itself, comprising respectively in the vicinity of each of its ends, on the one hand, two radial stops directed outwardly of the band to constitute complementary tightening means adapted to be gripped by a tool of the pliers type, on the other hand, complementary joining means generally in the form of hooks which, in the non-tightened state of the clamp, are at a distance from each other, characterized in that eachassembly (2, 3) of a tightening means and of a joining means is constituted ba a portion (2a, 3a) of metal band of which the two ends (2b, 2c-3b, 3c) are suitable bent to form the stop and the hook, said band portion being independent of the band (1) constituting the clamp and being fixed thereon by any appropriate means.
Patent PT-90287-A (PT)
Inventor: SAURY JACQUES
IPC: A46B11/00
Filed: 1989-04-17
Abstract: A single-use, throw-away brushing device, in particular for teeth. The single-use, throw-away brush comprises a flexible holder for toothpaste or other treating product (1) constituted by a gripping handle having a non-flexible paste-dispensing cannula (4) extending therefrom, provided with an inner longitudinal opening (8) connected, on the one hand, to the holder (1) and, on the other hand, to a nozzle (5) fixed on the end by means of which the toothpaste is dispensed onto a silk bristle brush head (2) located on the cannula and covering its nozzle, said head being provided with a hole (6) coming into contact with the nozzle. The device is essentially characterized in that: the cannula according to the end facing the holder comprises a rigid disk-shaped collar whose diameter is larger than that of the cannula; the holder is composed of a tubular flexible sheath, fixed by one of its ends to the collar; the length of said holder, whose capacity is limited to a single dose, is such that it can be pressed completely between the user's thumb and index finger. By using his thumb and index finger, the user causes the front part of the flexible sheath constituting the holder to be brought against the inner surface of the collar (7), such that the cannula is blocked axially in relation to the holder; and the brush head is fixed to the end of the cannula and is set aside from the collar (7) and hence from the holder at an interval sufficient so that it may be inserted between the jaw extremities without the holder being placed in the user's mouth.
Patent PT-92747-A (PT)
IPC: A61K9/16
Filed: 1989-12-28
Abstract: Microgranules loaded with a substance which is therapeutically active with respect to skin disorders and which melts on application to the skin. They are essentially formed by granulation of the abovementioned active substance using at least one saturated fatty acid triglyceride having a melting point of between 30 and 50 DEG C, the abovementioned microgranules having an average diameter of between approximately 5 mu m and 800  mu m. These microgranules find application in the treatment of skin disorders.
Patent PT-92796-A (PT)
Inventor: WALSH ROGER JOHN AITCHISON
IPC: A61K31/275
Filed: 1990-01-05
Abstract: Thioformamide derivatives of the formula: <CHEM>  wherein: R represents alkyl; A represents an optionally substituted phenyl or heteroaromatic group; R<1> represents hydrogen, alkyl, cyano, carboxyl, formyl, carbamoyl, alkoxycarbonyl or a group -(CH2)nOR<2>, -(CH2)nSR<2>, -(CH2)nN(R<2>Ü2, -CH=CHR<3>, -CH=NOR<4>, -CONHR<5>, or -COR<6>; R<2> represents hydrogen, alkyl, alkanoyl, aryl, aryl(CH2)n- or arylCO-, or, when attached to nitrogen, two R<2> groups may together represent alkylene; R<3> represents hydrogen; alkyl, alkanoyl, carboxyl, carbamoyl, cyano, aryl, arylCO-, aryl(CH2)n-, or aryl (CH2)n CO-; R<4> represents hydrogen, alkyl, aryl, aryl(CH2)n-, optionally substituted alkyl, alkenyl, amino or carbamoyl N,N-disubstituted by alkylene; R<5> represents alkyl, aryl, or aryl(CH2)n- or an amino acid residue; R<6> represents alkyl, aryl, or aryl(CH2)n-; .... represents a single or double bond provided that when R<1> is formyl .... represents a double bond; Y represents ethylene, methylene or a direct bond; and n is 1 to 6; and salts thereof possessing useful pharmacological properties.
Patent PT-93471-A (PT)
Inventor: ALMEN TORTEN
IPC: A61K49/04
Filed: 1990-03-16
Abstract: The invention relates to improved contrast media containing non-ionic contrast agents, e.g. non-ionic iodinated X-ray contrast agents, the improvement being achieved by incorporation of sodium at 20-60 mM/l.
Patent PT-94162-A (PT)
Inventor: CORREIA YVES
IPC: C07B61/00
Filed: 1990-05-25
Abstract: Synthesis of 1,1,1,2-tetrachloroethane by a hydrochlorination of trichloroethylene in the presence of metal halides. In particular, ferric chloride and aluminium bromide are employed; the reaction is selective.
Patent SE-8804663-A (SE)
IPC: F02B3/06
Filed: 1988-12-27
Abstract: A method of monitoring periodic vibrations of machine equipment with a number of machine components which generate vibrations, in particular for monitoring the periodically repeated ignition sequence in a multiple cylinder combustion engine, in particular a number of diesel engines connected in parallel in a ship. Vibration signals (A) from sensors, which are disposed on a joint gear box on the extension of the respective engine axle, are sampled upontriggering (B) from a trigger sensor, which is disposed on the cylinder which is first in the ignition sequence of the respective engine, and are digitized to form time series, whereupon mean values are calculated on the basis of a plurality of such time series so as to form a characteristic ignition sequence. According to the invention the vibration signals (A) are additionally converted (FFT) to the frequency domain, and the peaks in the frequency spectrum are reconverted to time intervals for fine-correction of the respective characteristic ignition sequence.
Patent SI-9300598-A (SI)
Title: Building brick, proces for manufacture the same and building make out whith use of this bricks
Inventor: CAMBIUZZI GIULIO
IPC: E04B1/00
Filed: 1993-11-17
Abstract: PCT No. PCT/EP93/03203 Sec. 371 Date Jul. 18, 1995 Sec. 102(e) Date Jul. 18, 1995 PCT Filed Nov. 15, 1993 PCT Pub. No. WO94/11587 PCT Pub. Date May 26, 1994A building block comprises a transverse groove (12) in each end face (10b, 10c), an opening (15) extending from the first (10e) to the second bearing face (10d) in which a longitudinal groove (13, 14) is also provided. The block is further provided with reference and positioning structure comprising a pair of longitudinal seats on the first bearing face and a pair of projections, each divided into three projection portions, on the second bearing face. When a building structure is constructed, the blocks 10 are superposed dry and in a staggered arrangement in superposed rows, such that the longitudinal seats of each block engage the projections on the blocks of the underlying row. The apertures and the grooves in the blocks constituting the building structure form a grid of intersecting vertical and horizontal channels which extend over the entire building structure, and in which a binder is poured and solidifies, ensuring that the building structure is stable and resistant over time.
Patent SI-20258-A (SI)
Title: Process of manufacture of hollow wooden articles
Inventor: LAUTAR PETER
IPC: B27M1/08
Filed: 1999-06-11
Abstract: A process of manufacture of hollow wooden articles, first of all furniture elements such as table legs, binding laths as well as various decoration boxes, such as packaging boxes e.g. for decoration pieces or presents, is enabling a cheaper and faster manufacture of articles of the same quality as those made of massive wood. The process according to the invention comprises several phases. First phase: manufacture of a flat semifinished article (1) consisting of two plates (2, 3) connected by laths (4), the spacing of their longitudinal axes being approximately equal to the width of the finished article (5), and with their ends closed by two transverse laths (6); second phase: cutting of the semifinished article (1) within the lath area (4) into finished articles (5); third phase: adjustment of the finished products (5) to the required length by cutting; fourth phase: fitting the side or cut planes of the dimensionally determined finished article (5) with a final material, preferentially veneer; fifth phase: surface finishing of the end article.
Patent TR-24617-A (TR)
IPC: C11D3/386
Filed: 1985-05-22
Abstract: The enzyme containing granulates contain less than 2% chloride and besides enzyme, coating materials, granulating aids and water, also specified amounts of one or more easily water soluble salts, especially alkali metal sulphates, and of one or more heavily soluble salts, especially sulphates, carbonates, phosphates or silicates. The granulates exhibit an excellent storage stability and a satisfactory physical strength.
Patent UA-18777-A (UA)
Title: Method for localization of destruction of metal welded pipes for main pipelines
Inventor: SHMUKLER YOSYP SRULEVYCH
Filed: 1990-01-23
Abstract: The invention relates to pipes for high pressure gas-oil pipelines. A method for localization of destruction of metal welded pipes for main pipelines consists in that strengthening element is welded on pipe body along the spiral. The strengthening element is heated and winded with tension along the whole pipe length.
Patent UA-13036-A (UA)
Title: Conveyer for supply of sheets into processing unit
IPC: F24J3/00
Filed: 1990-07-05
Abstract: Conveyer for supply of sheets into processing unit contains vertical guides for a pile of sheets, gripping-transfer mechanism located under them, which includes a gripping device installed on the carrier connected with the drive for interaction with lower surface of sheet and means for transportation of sheet into the processing unit. On the carrier by means of horizontal axes are secured the rollers located in stepped corrugated guides, which lie in vertical planes from the lateral sides of carrier. Each of the guides is formed, at least, by two areas oriented from top to bottom and one intermediate section placed between them, the latter from which is oriented in the direction of transportation of sheet to the processing unit.
Patent UA-7291-A (UA)
Title: Method for producing food product
Filed: 1990-08-22
Abstract: A method includes introduction into a liquid, which is in material, of an additive of phenolic substances of vegetable origin and further bringing the product to readiness. After introduction of the additive into the material, oxidation of the additive components is performed by oxygen at bubbling it through the material or by the electrochemical method, after insertion of platinum-titanic electrodes and a saturated calomel electrode and creating a potential at anode of 1,5-1,8 V, the material is periodically being sampled for determination of amount of radicals formed therein by the electrochemical method, the combustion is being stopped at the maximum concentration of radicals in the material sample.
Patent UA-13744-A (UA)
Title: Friction onlay
Filed: 1990-12-20
Abstract: Onlay has polymer friction material reinforced with cellular monolithic frames placed in plane equidistant to working surface of the onlay. Cellular monolithic frame is made of punched-drawn sheet with side surfaces of cells placed at angle to working surface.
Patent UA-19104-A (UA)
Title: Device for multiple recording and reproducing information
Filed: 1991-03-19
Abstract: The invention relates to the field of information storage. The device contains an optical transmitter unit, a polaroid film, a recording magneto-optical layer, another polaroid film and a photoreceiving unit are optically connected and connected in series as well as a reversal magnetization system connected with a recording magneto-optical layer.
Patent BG-100926-A (BG)
Title: Method for the preparation of purines
Inventor: DALES JOHN R
IPC: C07D473/00
Filed: 1996-10-18
Abstract: The invention relates to a method for the preparation of a compound having formula (A) where X means hydrogen, hydroxy, chloro, C1-6-alkoxy or phenyl-C1-6 alcoxy and Ra and Rb mean hydrogen or its acyl or phosphate derivative, by: (i) preparation of a compound with the formula where R1 means C1-6-alkyl or phenyl-C1-6-alkyl where the phenyl group is optionally substituted, R2 means hydrogen, hydroxy, chlorine, C1-6-alkoxy, phenyl-C1-6-alkoxy or amino, R3 means hydrogen, C1-6-alkylthio, C1-6-alkylsulphonyl, azido, aminogroup or protected aminogroup in reaction with a compound having the formula: where R2 and R3 have the same meanings as in formula I, and a compound having the formula where L is a splitting group and R1 has the meanings of formula I until a compound with the following formula is produced: There follows the conversion of the intermediate compound having formula VI into a compound having formula I by decarboxylation, and if necessary or if wanted - the conversion of the meanings of the substituents R1, R2 & R3 into other meanings, and (ii) conversion of the compound produced by formula I into a compound of formula A by the conversion of R3 when it differs from amino, in an aminogroup, reduction of the ester groups CO2R1 to CH20H and optionally the formation of acyl of phosphate derivatives if required or if wanted, the conversion of the R2 substituent of the compound of formula I into substituent X of the compound of formula A, the substituent R2 being chlorine in formula I.
Patent BG-100950-A (BG)
Title: Roll mandreal device
Inventor: PISKOV OGNJAN I
IPC: B23D41/04
Filed: 1996-10-31
Abstract: The device is used for roll mandrel application ofthin-walled and tick-walled short and long tubular billets ofdifferent diameters, wall-thicknesses and lengths. It consists ofa front (fixed) and rear mobile (2) clamping head with jaws (3)basing the billet (5) along technological grooves axiallyassembled and fixed to the bottom of a hydraulic power cylinder(6) and to its piston rod (7), respectively. Cylinder (6) iscoaxially mounted and is fixed to a support plate (9) to theopposite side to its bottom, plate (9) having a central hole witha rest (11) elastically mounted in it.
Patent BG-102982-A (BG)
Title: Localizing band of the track for detecting ground buried lines, in particular nonmetallic lines
Inventor: KOHLSTADT KLAUS
IPC: G01V15/00
Filed: 1998-12-02
Abstract: The invention is used for the localization of nonmetalliclines in the ground. It improves the accuracy in the determinationof its location. The localizing band of the track includes a bandbody (10) made of two strips (11, 12) interconnected along theirentire surface, the interior of strip (19) containing mulipleconductors made of metal. For easier detection of the loction ofthe localizing band on the track the conductors are of copperwhich does not corrode in the ground even if one of the conductors(21) is bare and its sections (25) ensure sound electric contactwith the earth. Conductors (22, 23) are covered with an inulationlayer (28) which screens them electrically from the groundenabling the actual determination of the location of thelocalization band. The insulated conductors also enable theconventional passive method for detecting the loaction.12 claims, 1 figures
Patent BG-105958-A (BG)
Title: External fixing part for urgent mounting
Inventor: MALEEV KIRIL D
IPC: A61F5/00
Filed: 2001-09-27
Abstract: The fixing part is applied in orthopoedics for open fractures of the long bones. It is used for the treatment of heavy injuries wherein it is required to fix and stabilize the broken limb, in order to continue with the treatment of the remaining traumas. The fixing part comprises a leading bar (1) to which from four to six crossbars (2) are mounted. The crossbar is made of two connected arms, to the end of which supporting nuts (11) are welded. Both arms are welded to a supporting tube (5), to the upper end of which there is a welded stud.(10). The supporting tube is sliding along the leading bar and a and is fixed to it by means of the special washer (3) and the securing nut (4). Mobile threaded crossbars (9) are fitted to nuts (11), fixed at the required angle by means of a safety-nut (6). The threaded part of the implants (8) is screwed into the specially machined mobile threaded crossbars, which are in the form of cylindrical studs with a threaded part, wound into the screw-type crossbars, and an unthreaded part, ending with a conical top and a journal. The conical top penetrated into the upper layer of the bone, and the journal, by means of tightening, is of fixing type and stabilizing by means of a nut (7). Nut (7) is of special make (blind), having a safety-nut (12) in addition. 2 claims, 4 figures
Patent BG-108430-A (BG)
Title: Microsensor for magnetic field
Inventor: RUMENIN CHAVDAR
IPC: H01L43/06
Filed: 2003-12-09
Abstract: The microsensor for magnetic field is used in the field of instrumentation engineering, weak field magnetometric, sensor and microsystems engineering, in contactless automation, in instrumentation engineering, the electric power industry, electrical engineering and others in the elimination of Hall's low efficiency effect in the magnetic field converters. The magnetic field microsensor comprises a semi-conductor substrate of mixed type conductivity, on one of the sides of which at equal distances from each other three identically rectangular-shaped ohmic contacts are formed - one central and symmetrically to it - one end ohmic contact each. All contacts are positioned parallel to their long sides. The central ohmic contact, across a current source, trimmer and respective load resistor is connected to the two end ohmic contacts. The external magnetic field is applied parallel to the long sides of the rectangular contacts, being the two end ohmic contacts representing the output. On thesurface of the semi-conductor substrate (1), between the central (2) and the two end ohmic contacts (3 & 4) one more each internal ohmic contacts (5 and 6) and one each emitter p-n transition (7 and 8) are formed in series, all having rectangular shape and being parallel to the remaining contacts (2, 3 and 4). The polarity of the central Ohmic contact (2) matches that of a p-n transition switchedin straight direction, the inner ohmic contacts (5 and 6) are coupled to the two emitter p-n transitions (7 and 8), respectively.
Patent BG-113108-A (BG)
Title: Biological method for preparation of silver nanoparticles
Inventor: KUYUMDZHIEVA ANNA
IPC: C12P3/00
Filed: 2020-03-24
Abstract: An effective biological method for the preparation of Ag-nanoparticles has been developed, as it allows for large-scale production of nanoparticles with defined properties and sizes aimed to find application as a food additive with healthy effects in cosmetics, medicine, agriculture and ecology. The method involves the synthesis of silver nanoparticles using a biogenic reducer (aqueous milk permeate solution, yeast extract, water-based plant extracts, organic acids, filamentous fungi of the species Monascus purpureus), recording their UV - Vis absorption optical spectrum and determining their average diameter. By using this method what is obtained are products of Ag-nanoparticles, which are characterized by transparency; reddish-brown colour (AE lambda400 = 0.18 - 84.3), which is preserved during storage for 6-9 months; average size of Ag-nanoparticles: 10-14 nm; FWHM = 50-70; antibacterial activity against model Gram-positive and Gram-negative bacteria.
Patent CN-1265490-A (CN)
Title: 码分多址接收器
Inventor: RINTAKA AZUMI
IPC: H04W52/08
Filed: 2000-03-01
Abstract: 一种能够降低闭环功率控制的CDMA接收器被提供用于码分多址系统。该CDMA接收器包括最大相关检测器和去扩展部分,用于从已经扩展的接收信号获得原始信息信号。该最大相关检测器在所接收复制信号与具有最大相关值的接收信号之间的互相关中检测最大相关值。该去扩展部分通过利用由最大相关检测器所获得的接收时序对该接收信号执行去扩展并输出。该CDMA接收器还具有接收质量测量部分,其测量接收信号与干扰的比率(SIR)作为接收信号的接收质量。
Patent CN-1272407-A (CN)
Title: 射频清洗工艺
Inventor: ZHAO YANPING
IPC: B08B9/027
Filed: 2000-05-15
Abstract: 本发明涉及一种用于磁约束聚变装置第一壁的清洗工艺,其特征是:离子回旋天线置于磁约束聚变装置内,该装置内预充有氦气;由射频发射机提供所需的射频波;射频波经阻抗匹配系统耦合到离子回旋天线,使该天线激发射频电磁波;射频电磁波电离产生等离子,轰击面向等离子的磁约束聚变装置第一壁表面,解吸吸附在该壁表面的杂质;用大抽速的真空泵将解吸出来的杂质分子抽出,实现快速、高效清洗磁约束聚变装置第一壁的目的。
Patent CN-1327642-A (CN)
Title: 用于对码分复用信号进行解码的方法和装置
Inventor: FALKENBERG ANDREAS
IPC: H04B1/707
Filed: 2000-04-13
Abstract: 为了从若干码(c(t))中选出正确对码分复用信号(r(t))进行编码的码。每次都将单个码(c(t))组合成将与接收到的码分复用信号(r(t))进行比较的组合码。然后,与这个码分复用信号(r(t))有着最大相似性的那些组合码的单个码将逐个地与接收到的码分复用信号(r(t))进行比较,并选出那个与码分复用信号极相似的码(c(t)),用于解码。
Patent CN-1407328-A (CN)
Title: 流体成份浓度测定方法及装置
Inventor: TETSUYA SATO
IPC: G01N30/62
Filed: 2002-01-31
Abstract: 本发明提供一种流体成分浓度测定方法及装置，能够实时且连续的测定，也适于管内监测，并且能够适用于高压气体而能够对应种种的成分测定。在流体流路中，试料流体流经具有一定直径小通孔13的测定用配管14，此时由测定前述小通孔13的前后的压力差(P1－P2)与此小通孔13的下游侧的流量，以测定前述试料流体的成分浓度。
Patent CN-1374549-A (CN)
Title: 光学补偿性起偏器及液晶显示装置
Inventor: SHUHARU YAGASAKI
IPC: G02F1/13363
Filed: 2002-03-01
Abstract: 光学补偿性起偏器具有起偏器和光学补偿膜,起偏器包括吸收型偏光元件和配置在吸收型偏光元件的相对侧面上的透明保护层,每个透明保护层呈不大于10nm的面内延迟和30到70nm范围内的厚度方向延迟。光学补偿膜叠加在起偏器的相对表面中一个或每个表面上,使得每个光学补偿膜的慢轴与起偏器的吸收轴垂直交叉,光学补偿膜呈80到200nm范围的面内延迟和－0.2到0.2范围的Nz=(nx－nz)/(nx－ny),其中nz为沿表示光学补偿膜的厚度方向的Z轴方向的折射率,nx为沿表示垂直于Z轴的平面的光学补偿膜方向的X轴方向的折射率,ny为沿表示同时垂直于Z轴和X轴的光学补偿膜方向的Y轴方向的折射率,且nx和ny满足关系式nx>ny。
Patent CN-1459743-A (CN)
Title: 自适应的历史数据压缩方法
Inventor: WANG HONGAN
IPC: G06F17/00
Filed: 2002-05-24
Abstract: 对数据库中的历史数据压缩处理的自适应数据压缩方法，包括步骤：压缩时间判断：对当前测量值，判断测量时间是否在给定的压缩时间区间内，在当前测量值的时差太小时，不执行后面的步骤，继续考察下一测量数据；在当前测量值的时差太大时，存储当前值的前一值，作为下一轮数据压缩测试的起点和新的上一存储点；斜率的计算：计算当前值斜率及当前最大斜率和最小斜率；对不同时刻的测量数据，根据当前最大/最小斜率，自适应地动态计算压缩偏差参数；用新计算的压缩偏差参数，计算当前值斜率的上界和下界；压缩测试判断：当前值通过压缩测试，存储当前值的前一个值，作为下一轮数据压缩测试的起点和新的上一存储点，否则继续测试下一个新的数据点。
Patent CN-1419277-A (CN)
Title: 以金属硬遮罩层制作双镶嵌插销的方法
Inventor: CAI TENGQUN
IPC: C03C15/00
Filed: 2002-07-19
Abstract: 本发明有关一种制作双镶嵌(copper dual damascene)插销(via)的方法，特别是有关一种以金属硬遮罩层(metal hard mask layer)制作双镶嵌插销的方法。本发明利用一金属层作为硬遮罩层，以使插销形成之后，隔离层(isolation layer)的表面可维持一平面而非一圆滑凸面，以防止插销相互连结而产生漏电流的缺陷。
Patent CN-1401639-A (CN)
Title: 一种合成氮杂环化合物的方法
Inventor: LU ZHENG
IPC: C07D295/027
Filed: 2002-09-25
Abstract: 本发明涉及一种合成氮杂环化合物的方法，可以制备多种氮杂环化合物。其制备方法是由贫电子的炔烃与具有双亲核中心的亲核试剂的反应，制备的氮杂环化合物具有如上结构通式，式中Y为N或O，并且当Y为O时R 5 不存在，R 1 、R 2 、R 3 为氢、烃基或取代烃基，R 4 、R 5 为氢、对甲苯磺酰基，苯磺酰基或烷基磺酰基。该方法简便，高效，条件温和，产率较好。部分产物经过简单转化，即可变为重要的药物中间体。