baber/WOPTO huggingface dataset:
Patent KR-800000125-B1 (KR)
Title: Process for recovery of ammonia in liquid ammonia fabric treating system
Inventor: LAWRENCE JACKSON
IPC: B01D53/00
Filed: 1976-12-17
Granted: 1980-03-08
Abstract: In a process for treating a moving cellulosic web in a confined area with liq. NH3 at near atm. pressure, NH3 was recovered by withdrawing the gas effluents from the zone after the web was heated to vaporize introducing the effluent into a body of anhyd. liq. NH3 at approx. atm. pressure to cool the effluent and to condense the water vapor, compressing condensing the gaseous NH3, withdrawing the liq. NH3-condensed water mixt. from the body and supplying it to treating zone, and replenishing the body of anhyd. liq. NH3 with anhyd. liq. NH3 from the condensing step.
Patent KR-820000467-B1 (KR)
Title: Turret type television tuner
Inventor: KATOU K
IPC: H03J5/30
Filed: 1977-02-10
Granted: 1982-04-03
Abstract: In the turret type TV tuner, a main channel selecting shaft is supported in end walls.  A toothed index wheel is mounted on the select shaft adjacent the first end wall.  A fine tuning shaft is mounted concentrically around the selector shaft.  A fine tuning drive includes a first driving gear mounted concentrically on the fine tuning shaft and a second driving gear mounted on a pivotally mounted member on the second end wall.  A coupling clutch permits a fine tuning operation.  A torsion bar spring member including a bail portion is mounted on the two end walls.
Patent KR-810000125-B1 (KR)
Title: Non-uniform sinking control method for tank
Inventor: OHODANI KAZUTO
IPC: E02D35/00
Filed: 1977-04-30
Granted: 1981-02-18
Abstract: The process of restoring the sunken bottom board of large sized tank is described.  As the drawing, a hole(3) and a reinforcement (4) and brackets (6) are set up.  After buildup of the steel construction (7), the jacks (8,9) are stood.  In order to prevent the tank from cracks, the jacks are operated up at the same time.  The tank is mended at a level with the ground and then the gap is filled up.  The hole of the bottom board is sealed hermetically.  And the tank is taken down to the ground.
Patent KR-800001030-B1 (KR)
Title: Method for preparation of dimethyl ether
Inventor: NOTARI B
IPC: B01J21/12
Filed: 1977-12-14
Granted: 1980-09-26
Abstract: Me2O was prepd. in high conversion and yield by hydrogenation of CO over Si compd. stabilized catalysts contg. Al, Cr, Ta, Mn, Cu, and/or Zn at 300-330≰C, 50-100 kg/cm2, and space velocity 1,000-10,000/h. Thus, passing 3:1 H- CO over a Cu-Zn-Cr catalyst on stabilized Al2O3 at 300≰C, 50kg/cm2, and space velocity 3,500/h gave CO conversion 56% and selectivity for Me2O 61.3, MeOH 3.3, and CO2 35.4%
Patent KR-790000301-B1 (KR)
Title: Production of 1-substituted pyrazol-5-ones
Inventor: MENG K
Filed: 1979-01-13
Granted: 1979-04-23
Abstract: The title compds. (I;R-H, NH2, Ph, CF3, alkyl, alkeny1, R1=H, alkenyl, alkyl, allyl, R2 = alkyl, R3 = 4-MeC6H4, 3,4-Cl2C6H3, 4-FC6H4, 4-pyridyl, 2-naphthyl) were prepd. by reacting a derivative of pyrazol-5-one with NH3 in a inactive solvent at 20-220≰C. I (R-R3=Me) at 3mg/kg orally in dogs caused elimination of 1158μ equiv. Na, 358μ equiv. K, and 10.5ml H2O/kghr, compared with control values of 168, 136, and 2.4, resp.
Patent KR-820002032-B1 (KR)
Title: Coordinate measuring machine having an air counterbalance system
Inventor: TUSS J
IPC: G01B5/02
Filed: 1979-05-08
Granted: 1982-10-25
Abstract: The coordinate measuring machine has a vertically mounted probe (42) whose weight is counter balanced by a system which uses a source of air under pressure acting upon a piston(127).  This is connected by a tape(141), pulleys(132,131)and by a tape(151) to the vertically mounted probe(42).  The pulleys & tapes from a torque converter(130) which allows the piston(127) to have a shorter traval than the allowable vertical travel of the probe(42).  Pref. the piston head has a rear surface exposed to atmospheric pressure.
Patent KR-830000309-B1 (KR)
Title: 제암활성을 가진 다당류의 제조법
IPC: C12P19/04
Filed: 1979-09-20
Granted: 1983-03-02
Abstract: 내용 없음.
Patent KR-830002451-B1 (KR)
Title: 이미다졸릴 비닐 에테르의 제조방법
IPC: A46B13/02
Filed: 1979-12-11
Granted: 1983-10-26
Abstract: 내용 없음.
Patent KR-840000151-B1 (KR)
Title: Process for preparing 1-azaerythrinan and itssalts
Inventor: MURAI HIROSI
IPC: C07D513/16
Filed: 1980-02-04
Granted: 1984-02-22
Abstract: The title compds. I [Y=-(CH2)n, O, S, NH, -NCH3; N=0,1; R1, R2, R3=H, lower alkoxy, halo, OH; R4=H, lower alkoxycarbonyl, -CH2CH=CR5R6; R5, R6=H, lower alkyl, ph, -(CH2)mBz; m=1,2  which exhibited an analgesic activity, were prepd.  Thus, 10.3g ethyl-2-ethoxycarbonylmethyl-3-piperidone-1-car-boxylate and 4.8g -pentylethylamine were dissolved in 70mL toluene and refluxed for 20 hrs. to give 5.0g ethyl-8-oxo-1-azaerythrinan ! -1-carboxylate.
Patent KR-840000214-B1 (KR)
Title: Poly (acrylate) containing composition
Inventor: PETERS EDWARD NORMAN
IPC: C08F222/10
Filed: 1980-05-01
Granted: 1984-02-29
Abstract: Molding compsn. comprises (A) (1) 5-60 wt.% polyacrylate of formula CH2=CR1-CO-O ! -(R)-(O-CO-CR2=CH2)n, where R is OH free residue of an organic polyol contg.  OH gps. bonded to different C; R1 and R2 are H or methyl; n is 1-3; (2) 5-60 wt.% monoethylenically unsatd. monomer soluble in (1), where (1)+(2) have viscosity 1-50 cps, and (3) 0.2-3 wt.% elevated temp. free radical caring catalyst. The compsn. further contains (B) 15-80 wt.% reinforcing fibers of m.p. or glass transition temp. above 130≰C. All wt.% are based on the total compsn.  The fibers may be of glass, carbon or aromatic polyamide.  The polyacrylate is e.g. ethoxylated bisphenol A dimethacrylate.
Patent KR-830002056-B1 (KR)
Title: 2-(6'-메톡시-2'-나프틸)-아크릴산의 제조방법
IPC: C07C59/64
Filed: 1980-05-20
Granted: 1983-10-08
Abstract: 내용 없음.
Patent KR-830002569-B1 (KR)
Title: 대물렌즈 구동장치
IPC: G02B7/02
Filed: 1980-06-24
Granted: 1983-11-14
Abstract: 내용 없음.
Patent KR-840001602-B1 (KR)
Title: Positire-working radiation-sensitive composition
Inventor: RUCKERT HANS
IPC: G03F7/26
Filed: 1981-06-20
Granted: 1984-10-11
Abstract: Pos.-working photoresist materials for various purpose carry on a temporary sopport a light-sensitive thermoplastic layer consisting of a compd. with an acid-splittable -C-O-C- link (orthocarboxylic acid deriv.,acetal, enol ether, N-acyliminocarbonate) 15-50% with o.2-5aa5 of a donor liberating a strong acid on irradn., and a novolac as binder 45-80%. The mech. and/or chem. propertise of thr layer, such as elasticity, tolerance in the aq. alk. developer or etch baths, adhesion to Si wafers, and oleophilic relief propertise are modified by 1-50% of a poly(vinyl alkyl ether), poly(alkyl acrylate), polyurethane, or hydrogented colophony resin.
Patent KR-870001563-B1 (KR)
Title: Method for production of sewing-needles
Inventor: PAVEL KLAUS
IPC: D05B85/00
Filed: 1982-03-24
Granted: 1987-09-04
Abstract: A steel wire is inserted into a compressor, which consists of an upper die(2) and a lower die(3).  This compressor perforates an eye through the wire and reduce the section of a portion by one strote. The neck (5) is inclined to the needle tip on the shank (6).  A hollowed hole(6') is made at the eye of the needle.  The shank has a V-style section because of a simultaneous compression of the little grooved portion(8).  The blank extrudes the dies and this portion helps the holding of the needle to a cutter.  The extruded portion(14) of the upper penetrator joints with the grooved portion(8).  The extruded portion of the blank(9) is cut as the upper penetrator(13) move toward the lower penetrator(11).
Patent KR-830000842-B1 (KR)
Title: Apparatus for starting an air compressing four storke internal combustion engine
Inventor: WEITZ A
IPC: F02N99/00
Filed: 1982-03-26
Granted: 1983-04-20
Abstract: In an IC engine having a crank shaft & a cam shaft, the cam shaft is rotated by the crank shaft at one-half the speed of the crank shaft and normal-closed intake & exhaust valves (2,3) are opened periodically by rocker arms(6) displaced periodically by the cams(9,10) on the cam shaft(8). Two cams fitted on a common cam shaft are offset from each other by about 180≰& are arranged on the rocker arms resp. The rocker arms can be operated selectively by one or both cams. Each rocker arm is maintained by the force of a spring(18) & can slide in an axial direction with respect to the cam shaft by means of hydraulic, pneumatic or electrical actuating means (13,15) against the spring force.
Patent KR-860001547-B1 (KR)
Title: Process for the preparation of the d-2-(6-methoxy-2-naphthyl)-propionic acid
Inventor: CANNATA VINCENZO
IPC: B01J31/02
Filed: 1982-03-29
Granted: 1986-10-04
Abstract: D-2-(6-Methoxy-2-naphthyl)-propionic acid I [R=H! were prepd. by resolution of d- and l-2-(5-halo-6-methoxy-2-naphthyl)propionic acids I[R=halo! with N-methyl-D-glucamine and then dehalogenation. Thus, 1- bromo-2-methoxynaphthalene was acetylated with AlCl-AlCl3 in 1,2- CH2ClCH2Cl and the product was treated with ClCH2-CO2Et, then hydrolyzed to give II. Oximation of II, followed by hydrolysis gave (±)-I[R=Br!,whichwasresolvedwith N-methyl-D-glucamine and the (+)- acid was dehalogenated with NaBH4-Pd/C to give I [R=H!. I or Naproxin is a known compd. having excellent antiinflammatory properties.
Patent KR-880002067-B1 (KR)
Title: Cermet tip for cutting with reactive surface layer excellent toughness and thermoplastic deformation resistance and it manufacture
Inventor: SUKIJAWA TAIJIROU
IPC: B23P15/28
Filed: 1982-09-28
Granted: 1988-10-14
Abstract: The cutting tool tip consists of (i) a cermet substrate comprising 10-35 vol.% of Fe, Co, Ni, Cr, Mo, W and/or Al, 5-40 vol.% Gp. IVa, Va, VIa metal carbide and/or nitride, balance titanium carbide and titanium nitride, the vol. ratio of TiN; TiC+TiN being 0.2-0.6; and (ii) a reaction layer comprising carbonitrides of at least two metals from Gps. IVa, Va, VIa including Ti, the layer having an average thickness of 0.2-15 microns, oxycarbonitrides of at least two metals from Gps. IVa, Va, VIa including Ti, the layer having an average thickness of 0.2-10 microns, the average total thickness of two layers being 0.5-20 microns.
Patent KR-910001486-B1 (KR)
Title: Method of increasing the cold material charging capacity in the top-blowing production of steel
Inventor: SCHLEIMER FRANCOIS
IPC: C21C5/32
Filed: 1983-02-03
Granted: 1991-03-09
Abstract: Pig iron is refined by top blowing with oxygen and injecting inert gas from the bottom. The slag formation is minimized by controlled addition of lime to match the formation of slag components as they are generated by the process. This increases the capacity of the melt to receive a cold charge, e.g. of scrap.
Patent KR-860000997-B1 (KR)
Title: Process for the preparation of 3,3'-or 3,4'-diamino phenylmethane
Inventor: YAMAGUCHI KEIZABURO
IPC: C07C67/00
Filed: 1983-05-18
Granted: 1986-07-26
Abstract: 3,3'- or 3,4'- Diaminodiphenylmethane is prepd. for use as monomer of polymer, esp. polyimide and polyamide. Dinitrobenzophenon compd (I) [ X = chloride, Y = hydrogen, chloride[ is reduced and dechlorided. The reaction temp. is 20 - 200≰C. The reducing metal catalyst is nickel, palladium, platinum, rhodium, ruthenium or cobalt. Organic solvent is alcohol, ether, glycol, aliphatic hydrocarbon, aromatic hydrocarbon, halohydrocarbon, N,N-dimethylformamide or sulfoxymethyl.
Patent KR-880002080-B1 (KR)
Title: Plastic valve and improved actuator thereof
Inventor: CONLEY RICHARD W
IPC: F16K27/02
Filed: 1983-05-24
Granted: 1988-10-14
Abstract: The valve assembly comprises a valve body of plastic material, and a valve disc rotatable by an actuating stem carrying a manual operating cap.  The latter is supported by a member which encompasses the valve body, and has a neck through which the valve stem passes and within which the stem is rotatable.  Torque generated by rotating the stem is distributed by the valve body encompassing member and its neck, and is not localised in the valve body itself to cause damage.
Patent KR-910006812-B1 (KR)
Inventor: CAVITT MICHAEL B
IPC: C08G59/14
Filed: 1983-08-16
Granted: 1991-09-02
Abstract: 내용 없음.
Patent KR-920007069-B1 (KR)
Inventor: BUCHWALD FRANK S
IPC: H02P7/298
Filed: 1984-05-10
Granted: 1992-08-24
Abstract: 요약 없음.
Patent KR-920001980-B1 (KR)
Inventor: MORIOGA AGIRA
IPC: C09D5/23
Filed: 1984-08-31
Granted: 1992-03-07
Abstract: 내용 없음.
Patent KR-920000286-B1 (KR)
Inventor: REINHARD SCHAFER
IPC: G21C3/62
Filed: 1984-10-06
Granted: 1992-01-11
Abstract: 내용 없음.
Patent KR-880000509-B1 (KR)
Title: Operating device of discharge lamps
Inventor: PARK MYUNG-KU
IPC: H05B41/02
Filed: 1984-11-29
Granted: 1988-04-08
Abstract: This invention relates to a lighting device of a discharge lamp like a fluorescent lamp.  The device has a stabilizer which is oscillated by RC time constant unlike being oscillated by the feedback of resonant current.  This lighting device is composed of a power transistor Q1 for switching and transistor Q2 for small signal.  A common AC potential is rectified by a full-wave rectifier which is constructed with bridge diode D1 and capacitor C1 in a small size, and pulsating DC potential is obtained.  The pulsating DC potential is applied to the main current path through a transformer T1 and a transistor Q1.
Patent KR-880002329-B1 (KR)
Title: Impact resistant high air retention bladders
Inventor: MARTIN ROBIN A
IPC: A63B45/00
Filed: 1985-04-10
Granted: 1988-10-26
Abstract: The invention is first prepared by a solution containing coating resin selected from polyvinylidene polymer, copolymer of vinylidene chloride and vinyl monomer, ethylenevinyl alcohol polymer and polyamide polymer in an organic carrier solvent that does not dissolve the polyurethane film or does not react with the film and then adds an organic active solvent of 3% to 18% by weight to the solution for mixing.  The mixed solution is coated on one side-face of a 3-12  mm thick polyurethane film and rapidly evaporated to repeat the process for a number of times to form a coating in the thickness of 0.3 to 1.2 mm.  The coated film is then formed into ball bladders.
Patent KR-890001726-B1 (KR)
Title: Stage for a steam turbine
Inventor: ROBBINS KENNETH E
IPC: F01D5/14
Filed: 1985-06-12
Granted: 1989-05-19
Abstract: The last stage of an axial flow steam turbine includes a rotor having spaced apart buckets (32) and nozzle partitions (30). They are circumferentially spaced such that the minimum throat between adjacent partition pairs extends a predetermined radial distance along a locus (110) from the root.  This forms a converging-diverging flow passageway between nozzle partitions. The trailing edges (31) of the nozzle partitions are disposed to include axial and tangential lean with respect to the rotor.  The buckets (32) include tip covers respectively connecting the tips and having a single outward radially extending sealing rib (36) on the radially outer surface of each cover, each rib (36) being tangentially aligned with respective adjacent ribs.
Patent KR-960001736-B1 (KR)
Title: Insulated wall assembly
Inventor: DETTBARN RICHARD
IPC: E04B1/14
Filed: 1986-01-15
Granted: 1996-02-03
Abstract: An insulated wall assembly, which is easy to construct, includes a plurality of panels (3), each defined by an elongated, rectangular, rigid foam plastic body (25) with central, longitudinally extending grooves (26) in each of two opposed ends thereof for receiving splines (8), so that the panels can be connected to columns (6) and cripples (7), which are defined by plastic bodies with longitudinally extending spline-receiving grooves therein and wooden strips attached to the bodies. The splines can be integral with the columns and cripples.
Patent KR-890000522-B1 (KR)
Title: Process for preparing penicillanic acid 1,1-dioxide
Inventor: KIM YONG-SEOL
IPC: C07D499/00
Filed: 1986-01-22
Granted: 1989-03-20
Abstract: Title compds. (I)[R=H, alkali metal cation , useful as fungicides, were prepd..  Thus, 2KHSO5.KHSO4.K2SO4 was dissolved in H2O, cooled to 5≰C, adjusted to pH 5.6 with 2N NaOH and added to a soln. of Na- penicillinate in H2O with stirring.  The mixt. was adjusted to pH 4.0-5.0 with 5% Na-Disulfite, heated for 3hr at 35-40≰C and adjusted to pH 2.6 with solid Na-sulfite and later to pH 1.6 with 3N HCl.  The acidic soln. was extd. with ethylacete over 2 times, and the aq. mother soln. was satd. with NaCl soln and extd. with ethylacetate. The org. phase was pooled, washed with satd. NaCl soln, dried on MgSO4, vacuum-evapd. and crystallized with ethyacetate/n-hexane to give 93% penicillanic acid 1,1-dioxide.
Patent KR-940004974-B1 (KR)
Title: Friction pivot joint for a window stay
Inventor: DAVIS RONALD P
IPC: E05D7/00
Filed: 1986-06-27
Granted: 1994-06-09
Abstract: A friction pivot joint between two components such as two arms, or an arm and a frame or sash plate, of a window stay, said joint comprising an aperture in a first of the components, an annular shoulder surrounding and projecting from the periphery of said aperture, an aperture in said second component whereby said second component is located about said shoulder, a bushing of a self-lubricating and wear-resistant material interposed between said shoulder and said second component to prevent direct contact therebetween, and a fixing means for fixing the joint and applying friction creating pressure thereto extending through the joint and fixed within or beneath said shoulder or in said aperture.
Patent KR-900007236-B1 (KR)
Title: Process for the preparation of a food product based on vegetable proteins
Inventor: AMMANN ULRICH
IPC: A23L25/00
Filed: 1986-07-29
Granted: 1990-10-06
Abstract: A process for preparing a food product based on vegetable proteins by forming a paste of vegetable protein material and water, cooking and drying, which comprises subjecting pulses or oilseeds to a first treatment with steam for 30 sec. to 15 min at 100 to 130 deg.C under a pressure between atmospheric pressure and 3 bar, grinding them, mixing them with water to prepare a paste having a dry matter content of from 50 to 70% by weight, shaping the paste, subjecting it to a second treatment with steam for 30 sec. to 15 min. at 100 to 130 deg.C under a pressure between atmospheric pressure and 3 bar, drying it and cutting it up into individual articles before or after drying.
Patent KR-950007145-B1 (KR)
Inventor: DZIKI MICHAEL M
IPC: B29C47/36
Filed: 1986-10-08
Granted: 1995-06-30
Abstract: 내용 없음.
Patent KR-950007514-B1 (KR)
Inventor: PINKERTON HARRY E
IPC: F04B53/14
Filed: 1986-11-18
Granted: 1995-07-11
Abstract: 내용 없음.
Patent KR-940008913-B1 (KR)
Title: Process for manufacturing n,n-dimethyl-1-(1-(4-chlorophenyl)cyclobutyl)-3-methylbutylamine hydrochloride monohydrate
Inventor: JEFFERY JAMES E
IPC: A61P25/26
Filed: 1986-12-16
Granted: 1994-09-28
Abstract: N,N-Dimethyl-1-[1-(4-chlorophenyl)cyclobutyl]-3-methylbutylamine hydrochloride monohydrate is a non-hygroscopic material which can be used as a pharmaceutical in the treatment of depression.
Patent KR-940004053-B1 (KR)
Inventor: KOBAYASHI TSUTOMU
IPC: C23C18/31
Filed: 1987-02-09
Granted: 1994-05-11
Abstract: 내용없음.
Patent KR-900006334-B1 (KR)
Title: Preparation method of polyester base film for video tape
Inventor: CHON YOUNG-KWAN
IPC: C08J5/18
Filed: 1987-02-25
Granted: 1990-08-28
Abstract: polyester outer layer (A layer) having  0.005-0.015 micrometer of intensity of illumination comprising the inorg. cpd. selected from calcium carbonate, dolomite, glassfair, fiber glass, asbesto talc, kaotin mica, peldspa, silica, barium sulphate, silicon carbide, molibdenium sulphide, zinc sulphide, aluminium silicate, zirconium silicate, barium titanate, aluminium trihydrate, or titanium dioxide; other outer polyester layer (B layer) having 0.2-0.04 micrometer of intensity of illumination comprising the claimed inorg. cpd.; and at least one polyester layer (C layer) contg. carbon black between A and B layers. The obtd. film has less than 30% of light transparency.
Patent KR-960005378-B1 (KR)
Inventor: ENGEL ROSA
IPC: H03G3/20
Filed: 1987-05-20
Granted: 1996-04-24
Abstract: 요약없음
Patent KR-900006460-B1 (KR)
Title: Apparatus with a device for selective blocking of one or more position of a manual control element
Inventor: BRUNO JACQUET
IPC: H01H71/10
Filed: 1987-08-13
Granted: 1990-08-31
Abstract: The device for selectively preventing actuating modes has a member having multiple functions being able to pass from a first position corresponding to a first function, to a second position corresponding to a second function and, from one at least of these two positions to a third position corresponding to a third function. The device includes a cover mounted for pivoting on the case so as to be applied in the closed down position against the face. The cover is formed so as to allow manuel access to the control member and includes a device for allowing this control member to change over from the first two positions to the third position, while preventing it from changing over from one to the other of these first two positions.
Patent KR-960007651-B1 (KR)
Title: Improved apparatus for forming a tube from polyfoil web for high capacity aseptic form, fill, seal machines
Inventor: WORDEN DONALD G
IPC: B65B9/20
Filed: 1987-10-22
Granted: 1996-06-08
Abstract: Improved form, fill, and seal machine (10) for making aseptic sealed packages (31) incorporating a plurality of web guiding rollers (142, 144) and flanges for manipulating a continuously fed polyfoil web (20) into a longitudinal tube (22) having a triangular cross section and opposing superimposed web edges that are sealed together to form the longitudinal seal in the tube. Web advance may be continuous or intermittent. Induction heating is used to longitudinally seal the edges of the web together to form a tube.
Patent KR-910000950-B1 (KR)
Title: Branch pipe socket attaching device complementing the liquid flow decrease
Inventor: OH JUNG-HO
IPC: F16L41/00
Filed: 1987-12-30
Granted: 1991-02-19
Abstract: A washer device (3) has at its ends wings (9) to fit with the inner wall of the pipe (1) and project ions (8) to  fit  with  the inner wall of the branch socket (5) and is provided  with  a  bolt (5) hole (10) in its center to receive the  socket  for  fastening with the bolt (6). When assembled, the device is formed  to  allow liquid flow through gaps (B,C) between the pipe (1) and the device (3) of rectangutar shape and through a branched pass (A).
Patent KR-940009029-B1 (KR)
Title: Amifloxacine intermediate
Inventor: HERMECZ ISTVAN
IPC: C07F5/00
Filed: 1986-12-09
Granted: 1994-09-29
Abstract: PCT No. PCT/HU86/00066 Sec. 371 Date Aug. 7, 1987 Sec. 102(e) Date Aug. 7, 1987 PCT Filed Dec. 9, 1986 PCT Pub. No. WO87/03594 PCT Pub. Date Jun. 18, 1987.The invention relates to new 6-fluoro-7-chloro-1-methylamino-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid/boric acid anhydrides of the general Formula I   <IMAGE> (I) (wherein R and R1 stand for halogen; an aliphatic acyloxy group comprising 2-6 carbon atoms and optionally substituted by halogen; or an aromatic acyloxy group comprising 7-11 carbon atoms). The new compounds of the general Formula I are valuable intermediates useful in the preparation of the antibacterial agent 6-fluoro-1-methylamino-7-(4-methyl-piperazino)-4-oxo-1,4-dihydro-quino line-3- carboxylic acid. The new compounds of the general Formula I may be prepared by reacting a compound of the Formula II    <IMAGE> (II)  or a compound of the general Formula III   <IMAGE> (III) (wherein R2 stands for alkyl comprising 1-4 carbon atoms) with hydrogen fluoro borate of the Formula IV HBF4 /IV/ or a borone trihalide of the general Formula V BX3 /V/ (wherein X stands for fluorine, chlorine or bromine) or a complex thereof formed with an ether or a borone derivative of the general Formula VI    <IMAGE> (VI)  (wherein R3, R4 and R5 stand for alkyl comprising 1-5 carbon atoms and optionally substituted by halogen or aryl comprising 6-10 carbon atoms).
Patent KR-970003356-B1 (KR)
Inventor: HOLTEN PETRUS A J
IPC: H01K1/28
Filed: 1988-02-23
Granted: 1997-03-17
Abstract: 내용없음.
Patent KR-950014446-B1 (KR)
Inventor: CHARLES L FOX JR
IPC: A61K31/635
Filed: 1988-02-26
Granted: 1995-11-28
Abstract: 내용 없음.