bluuebunny/crossref_metadata_2025_split huggingface dataset:
Reactions of Copper‐Free Hemocyanin from Taiwan Snails with Metal Salts
Authors: Wang S. M. , Chen M. N. , Tsay J. M. , Chung C. S. , Li N. C. 
Published: June 2015

AbstractCopper‐free hemocyanin (apohemocyanin, apoHc) from Taiwan snails was prepared by cyanide treatment and the reconstitution of hemocyanin was carried out by treating apoHc with Cu(CH3CN)4ClO4. At pH below 5, the apoHc solution is cloudy. When reconstituted at pH near 6, the ratio of absorbances, A345/ a280, has the normal value 0.21, and rapidly decreases with increase in pH. This indicates that reconstitution is best carried out near pH 6. Addition of fluoride at pH 5.3 and cyanide at pH 5.7 causes a relatively rapid drop in absorbance at 345 nm, a primary reaction followed by a slower secondary process. Comparison of the reactions of native and reconstituted hemocyanins with oxygen, fluoride, and cyanide shows that the reconstitution has been successful. Cadmium and manganese derivatives of hemocyanin have been prepared. The order of affinity of metals to the active site of hemocyanin is: Cu>Mn>Cd.
The Synthesis of Alanine Oligopeptides
Authors: Lin D. H. , Tseng Y. S. , Chien S. T. , Wang K. T. 
Published: June 2015

AbstractThe oligopeptides of alanine (penta‐, deca‐, and pentadeca‐) were synthesized by solid phase method and new peptide‐resin cleaving reagent TFA‐BBr3 was used to cleave the peptides from resin‐support. Penta‐alanine was also synthesized by liquid phase for the comparision and FAB‐Mass method was used to determine the molecular weight of penta‐alanine. HPLC separation of these new oligopeptides were described.
The Photochemistry of Acetone: The Primary Decomposition of Acetone and Biacetyl Yields
Authors: Ho W.J. , Niou B.J. , Chang S.M. , Ho Shih Yeng 
Published: June 2015

AbstractIn the photolysis of acetone at 265nm at 27°C the quantum yield of biacetyl has been determined to be 0.34 and the primary decomposition yield is evaluated to be about 0.68. The fraction of triplet acetone decomposed into methyl and acetyl radicals is estimated to be 0.14 at 313nm. The acetyl radicals undergo reaction to form biacetyl 50 times faster than decomposition to methyl radicals and carbon monoxide.
Amperometric Determination of Cr(III) and Cr(VI) by Flow Injection Analysis
Authors: Hwang J.M. , Chen Y.M. 
Published: June 2015

AbstractSpeciation of Cr(III) and Cr(VI) can be attained by flow injection analysis with amperometric detection. Cr(VI) is reduced in an acidic medium to Cr(III) with a glassy carbon electrode at —0.1 V vs. Ag/AgCl and the current is recorded. Cr(III) is oxidised on‐line to Cr(VI) with alkaline hydrogen peroxide solution. From the difference of the total chromium and Cr(VI), the amount of Cr(III) was obtained. A linear calibration curve for Cr(VI) was obtained for the concentration ranges 0.01‐5.0ppm of Cr(VI) and we have calculated the limit of determination to be about 0.5ppb. We have studied the degree of reproducibility obtained using the solid electrodes under various conditions. The influence of flow rate, coil length, interfenences and the extent of reaction were studied.
Structural Relationships between the Hemiporphyrazine Macrocyclic Ligand and its Metal Complexes. I.: Saddle Shaped Neutral Ligand Hydrate, C26H16N8·‐H2O, and Nickel Complex, [Ni(C26H14N8)]
Authors: Peng Shie‐Ming , Wang Yu , Ho Tsang‐Feng , Chango I‐Chen , Tang Chia‐Pin , Wang Chiung‐Jane 
Published: June 2015

AbstractCrystal and molecular structures of the neutral ligand hydrate, C24H16N8·H2O, and the diamagnetic nickel(II) complex, [Ni(C C24H16N8)], have been determined by three‐dimensional X‐ray crystallography. Pertinent data are: C24H16N8·H2O, Pnmm with Z=2, a=4.6142(3), b=14.7687(7), c=15.0650(5) Å, R=0.068, Rw = 0.038; [Ni(C24H16N8), 12/c with Z=4, a=22.0137(11), b=3.7637(4), c=23.4742(11) Å, β=92.7(1)°, R = 0.039, Rw=0.025. The overall conformations of the neutral ligand and the Ni(II) complex are similar, both have a pronounced saddle shape. The Ni(II) ‐N bond distances in the Ni‐complex are 1.861(2) and 1.998(2) Å. The distances from nitrogen atoms to the center of the ring in free ligand are 2.020(3) and 2.220(3)Å, which arc significantly longer than those of Ni(II) complex A detailed comparison about the core size with similar ligand is presented.
The Complexation of Some Sodium Sulphophenyl Hydrazo‐5‐Pyrazolone Dyes Towards Trivalent Lanthanide Ions “Stability Constants”
Authors: El‐Shetary B. , Stefan S.L. , Zidan F. , Moez M.S. 
Published: June 2015

AbstractAcid dissociation constants of substituted‐5‐pyrazolone dyes have been determined potentiometrically in 75% (v/v) dioxane‐water mixture at 30°C and <0.1 ionic strength. The stability constants of their 1:1 and 1:2 chelates with tweleve trivalent lanthanide ions have been determined under the same conditions. The data were correlated and the results were taken to explain the stabilization of such. chelates by dative π ‐bonding between Ln (III) and the ligand.
The Reaction of 2,5‐Dimethoxy‐2,5‐Dihydrofuran with Dichloroketene
Authors: Yang Chia‐Hsi , Lin Huang‐Chin , Whang Maw‐John 
Published: June 2015

Abstract2,5‐Dimethoxy‐2,5‐dihydrofuran (DDF) reacts with dichloroketene to give 7,9‐dimethoxy‐3,3,5,5‐tetrachloro‐8‐oxabicyclo[4,3,0]‐noan‐2,4‐dione (I), and methyl chloro‐(2,5‐dihydro‐5‐methoxy‐2‐furanylidene) acetate (II). The reactions of 2,5‐dihydrofuran and 2,5‐dimethoxy‐tetrahydrofuran with dichloroketene were also‐studied for comparison. Compound II was derived from the insertion of a molecule of dichloroketene into the C‐O bond of DDF with subsequent dehydrochlorination. Compound I resulted from the cycloaddition of two molecules of dichloroketene to the C=C bond of DDF. A mechanism involving a 1,5‐dipolar intermediate is proposed to account for this novel reaction.
13C‐NMR Spectra of 2‐ and 3‐Phthalimido‐3(2)‐Benzimidazolylpropanoic Acid and 2‐ and 3‐Phthalimidobenzimidazopyrrolone, Reaction Products of Phthaloylaspartic Anhydride with Ortho‐Phenylenediamine
Authors: Yang Chin‐Ping 
Published: June 2015

AbstractTwo pairs of isomers of 3‐ and 2‐phthalimido‐3(2)benzimidazolylpropanoic acid (V and VI) and 2‐ and 3‐phthalimidobenzimidazopyrrolone (VII and VIII) were produced from the reaction of phthaloylaspartic anhydride (I) with o‐phenylenediamine (II). The 13C‐NMR spectra of V and VI both showed 11 carbon signals indicating that the structures of their benzimidazole groups were symmetric. Isomers V and VI were easily distinguished from each other by the chemical‐shift‐differences (Δδ) of the methylene carbon and the methine carbon. Compounds VII and VIII displayed 14 carbon signals and no longer showed the symmetric structure of the benzimidazole moity, The chemical‐shift‐differences (Δδ) between methylene carbon and methine carbon in pyrrolones of VII and VIII can also be used to distinguish VII from VIII. The Δδ of compound VII is less than that of compound VIII.
Spectrophotometry Determination of Molybdenum with N‐Cyanoacylacetaldehyde Hydrazone
Authors: Kabil M. A. , Hafez M. A. H. , El‐Asmy A. A. , Mostafa M. M. 
Published: June 2015

AbstractN‐cyanoacylacetaldehyde hydrazone (CAAH), which is a laboratory synthetic reagent, is proposed as a new reagent for spectrophotometry determination of microamounts of molybdenum at λmax 790 nm. The reagent forms 1:1 blue coloured complex with molybdenum (VI) in phosphoric acid solution. The stable blue colour is obtained finally after changing from yellow to green. The colour development depends on temperature, time and concentration of phosphoric acid. This reagent is applied for the determination of molybdenum in steel alloys and the results are satisfactory.
Synthesis of (S)‐Propranolol by Chemicoenzymatic Approach
Authors: Wang Yi‐Fong , Kou Hwang‐Shang , Lee Becky , Hwang Lih‐Yueh 
Published: June 2015

Abstract(S)‐Propranolol, [1‐isopropylamino‐3‐(1‐naphthoxy)‐2‐propanol], which possesses important β‐adrenergic blocking activity, has been synthesized by a chemicoenzymatic approach. The 2S‐absolute configuration was created by the enzyme‐mediated asymmetric hydrolysis of the (±)‐2‐acetoxy‐1‐chloro‐3‐(1‐naphthoxy)‐2‐naphthoxy)‐2‐propanol. The enzymatically produced chiral intermediate was then chemically converted to optically pure (S)‐propranolol.
Reductive Coupling of Halomethylbenzene Derivatives by Nickel and Cobalt
Authors: Yang S. H. , Lee T. , Cheng C. H. 
Published: June 2015

AbstractReduction of benzyl bromide, benzal chloride and benzotrichloride with a commercial nickel powder at 150°C gave bibenzyl, trans‐stilbene, and trans‐1,2‐dichlorostilbene. The reaction intermediates 1,2‐dichloro‐1,2‐diphenylethane for benzal chloride and 1,1,2,2‐tetrachloro‐1,2‐diphenylethane for benzotrichloride were also isolated or detected by NMR spectroscopy. Dehalogenation of these intermediates by the nickel metal or by KI yielded the corresponding trans isomer as the main product. A commercial cobalt powder also reacted with these organic halides leading to similar results. Mechanisms for these reactions are proposed.
Identification of Abnormal Urinary Organic Acids in Inherited Metabolic Diseases by Gas Chromatography‐Mass Spectrometry
Authors: Yeh Sheau‐Farn , Hsiao Kwang‐Jen , Hung Su‐Hwi , Chang Kun‐Ten 
Published: June 2015

AbstractA gas chromatography/mass spectrometry (GC/MS) coupled system has been established for the confirmatory identification of abnormal urinary organic acids in inherited metabolic diseases. Samples of patient urines were extracted with an organic solvent and trimethylsilylated (TMS). A mass spectra of gas chromatographically separated TMS derivatives can be obtained using the GC/MS coupled system with a single analytical run. Those compounds with close methylene units (e.g., 4‐hydroxyphenylacetaic acid and phenylpyruvic acid) in the gas chromatograph can be identified by their specific mass spectra. The results indicate that this GC/MS system is a powerful method for identifying abnormal urinary organic acids. These acids can be identified by comparison with authentic mass spectra established in our laboratories or with mass spectra files from other sources or they can be directly identified by analysis of the mass spectrum. By using this system, we were able to make positive identification of several inherited metabolic diseases found in Chinese patients, including phenylketonuria, propionic acidemia, and methylmalonic aciduria. This GC/MS system is a powerful tool for the diagnosis of inherited metabolic diseases.
A Study of the Cis‐Trans Isomerization of a Square Planar pt Ylide Complex
Authors: Lin Ivan J. B. , Chang C. P. 
Published: June 2015

AbstractThe isomerization of cis‐Pt(PPh3)2(I)(CH2P(O)(OCH3)2), 1, was studied by an NMR technique. An Arrhenius plot for the isomerization gives an activation energy of 99.2 KJ/mol, ΔH≠ = 97 KJ/mol and ΔS≠ = −8.3 J/mol‐K. Under a CO atmosphere the cis isomer catalytically isomerized to its trans form. Free PPh3 did not catalyze the cis‐trans isomerization. In the proposed isomerization mechanism the reaction goes through an intramolecular assisted phosphine dissociation, followed by dimer formation. The addition of phosphine to the dimer then completes the isomerization of the original monomer from cis to trans.
Electron Spin Resonanance Studies of Acid‐Doped Polyaniline
Authors: Yang Sze‐Ming , Chien Shu‐Hua 
Published: June 2015

AbstractThe electron spin resonance spectra of various acid‐doped polyanilines were studied. There are three significant changes in the ESR spectra upon acid‐doping as the acid concentration of the doping solution is varied from pH<3 to pH>1: (1) The linewidth decreases by a factor of three. (2) The intensity increases. (3) The spin density increases by a factor of twenty. By comparing the variation of the electric conductivity with the variation of the spin density upon acid‐doping, it is proposed that the polyaniline prepared by chemical oxidation consists of various oxidized and reduced units, and that the pi‐electron rearrangement upon acid‐doping results in highly conductive radical cations.
The Self Oxidation Reduction of N‐Arylhydroxylamines
Authors: Yang Chia‐Hsi , Lin You‐Chung 
Published: June 2015

AbstractThe reactions of N‐phenylhydroxylamine in the presence of dry hydrogen chloride to form azoxybenzene, aniline, 2‐chloroaniline and 4‐chloroaniline were studied. The molar ratio of the azoxybenzene and aniline obtained was very close to one. A similar reaction was also observed for 2‐methyl‐ and 4‐methyl‐N‐phenylhydroxylamine. A reasonable explanation is that N‐phenylhydroxylamine undergoes a self oxidation reduction reaction to give aniline and nitrosobenzene, and the latter subsequently reacts with N‐phenylhydroxylamine to give azoxybenzene. The reaction of N‐phenylhydroxylamine, catalyzed by trifluoroacetic acid to yield azoxybenzene, was previously studied by Okamoto et al. and was suspected to undergo a similar reaction. We repeated the reaction and evidence for the same self oxidation reduction reaction was found. A mechanism involving the anilenium ion is proposed to account for this reaction.
Reactions of Methylphenylvinylsulfonium Tetrafluoroborate with Ketone Enolates
Authors: Chou Shang‐Shing P. , Liu Jyanwei H. 
Published: June 2015

AbstractThe reactions of methylphenylvinylsulfonium tetrafluoroborate (1) with the lithium enolates of 1,3‐dicarbonyl compounds, acyclic ketones and cyclic ketones have been studied. Cyclopropanes and cyclic ethers are obtained. The reaction mechanisms are also discussed.
A Facile Method for the Synthesis of Chloroiodomethane from Diiodomethane Under Aluminum Mediation
Authors: Lin Yih‐Tsung , Chang Ming‐Ju , Yang Paw‐Hwa 
Published: June 2015

AbstractIn the presence of iodine and at room temperature, a stirred mixture of diiodomethane, dichloromethane and aluminum powder gave chloroiodomethane ClCH2I (III) in excellant yield (90%).
Optical Properties of Model Compounds of Polyaniline
Authors: Yang Sze‐Ming , Chen Hsin Juan , Lin Jiann Shen 
Published: June 2015

AbstractThe UV and visible spectra of six model compounds were studied. These compounds can be considered as models of polyaniline in the reduced, cation radical, partially oxidized and oxidized forms. After treatment of a mixture of equal molar quantities of the reduced form (DPPD) and the oxidized form (QDIM) with acid, the following reaction was observed:DPPD(I)+QDIM(III)+2H+=2DPPD+(II)After similar treatment of the partially oxidized form (V) with acid, the radical cation salt formed.The UV and visible spectra of polyaniline in the reduced form, oxidized form and conductive form are similar to the spectra of DPPD, QDIM and DPPD+ or radical cation salt of V respectively. We propose that the polyaniline synthesized by chemical oxidation of aniline consists of oxidized and reduced repeat units. Upon protonation a redox reaction (or electron rearrangement) occurs and forms delocalized radical cations (polarons) in the polymer chain which are highly conductive.
Synthesis of Oxidized Nitro‐Polycyclic Aromatic Hydrocarbons
Authors: Wu Y.C. , Lai C.C. , Fu P.P. , Unruh L.E. 
Published: June 2015

AbstractA series of phenolic and cis‐dihydrodiol derivatives of 6‐nitrobenzo[a] pyrene and 7‐nitrobenz[a]anthracene were synthesized. The common structural feature of these compounds is that their nitro groups are perpendicular or near perpendicular to the aromatic moieties. From the synthesis of these compounds, it was found that an acetoxy group does not affect the regioselectivity of electrophilic nitration to a polycyclic aromatic hydrocarbon (PAH) and that a nitro substituent can substantially reduce the concerted electrophilic 1,2‐addition of osmium tetroxide to the most olefinic aromatic double bond of a PAH.
Organotransition‐Metal Complexes of Multidentate Ligands 3. The Unexpected Derivatives of Bis(3,5‐Dimethylpyrazol‐1‐YL)Methanetetracarbonylmolybdenlim(0) and‐Tungsten(0) Complexes
Authors: Shiu Kom‐Bei , Liou Kuen‐Song 
Published: June 2015

AbstractThermolysis of (H2CPz′2)M(CO)4 (H2CPz′2 = bis(3,5‐dimethylpyrazol‐1‐yl)methane; M=Mo, W) in 1,2‐dimethoxyethane did not give the expected 16‐electron complexes, (H2CPz′2)M(CO)3, but gave dinuclear compounds, [(H2CPz′2)M(CO)3]2, probably containing two linear carbonyl bridges and no metal‐metal interactions. The dimers reacted with CH3CN to give mononuclear compounds, (H2CPz′2)M(CO)3(NCCH3), identical to the substitution products between (H2CPz′2)M(CO)4 and CH3CN.
An Unprecedented Oxidation Reaction of Cyclopentadiene Derivatives by Pyridinium Chlorochromate
Authors: Wu Hsien‐Jen , Pan Kai , Hsia Ket‐Shang , Liu Wei‐Chi 
Published: June 2015

AbstractOxidation of the furan cyclopentadienes (2) and (4) with pyridinium chlorochromate gave the cyclopentenones (5) and (6) respectively. Oxidation of the alkyl cyclopentadienes (7a and 7b) also gave the corresponding cyclopentenones (8a and 8b) as the major products.
Reaction of Carbon Anions With Iron α,β‐Unsaturated Ketimine Complexes
Authors: Cheng Chien‐Hong 
Published: June 2015

AbstractComplexes (η4‐PhCH=CHCR=NPh)Fe(CO)3, where R=H(1a) and CH3 were synthesized in excellent yield from the reaction of the corresponding α,β‐unsaturated ketimines with excess Fe2(CO)9. Reaction of la with (Ph)2CHLi and (CH3)2(NC)CLi at −78°C or ambient temperature followed by acid quenching gave trans‐PhCH=CHCHRNHPh, where R=CHPH2 and C(CH3)2CN, respectively, in good yield. In the presence of 1 atm. of CO the reaction of 1a with (CH3)2(NC)CLi, followed by CuCl2 oxidation resulted in the formation of a carbamyl choride, trans‐PhCH=CHCH[C(CH3)2CN]N(Ph)COCl. This species was converted to a carbamate compound trans‐PhCH=CHCH[C(CH3)2 ‐ CN]N(Ph)COOCH3 in MeOH in the presence of Ag+.
Electrodeposition and Mössbauer Spectra of Fe‐Zn Alloys on Aluminum Foil
Authors: Chang Jiin‐Chuan , Wei Ho‐Hsiang 
Published: June 2015

AbstractBy controlling the current density, pH and temperature of the electrodepositing iron‐zinc bath, various compositions of electrodeposited Fe1‐xZnx (0.95 > x > 0.15) alloys on Al‐foil have been prepared. The electronic state, intermetallic phases and magnetic hyperfine interactions have been studied by means of 57Fe Mössbauer spectroscopy at 298K for these electrodeposited Fe‐Zn alloys. The isomer shifts obtained from the Mössbauer spectral of the alloys increased with increasing Zn content. An alloy containing above 50% Fe, exhibits a linear dependence of the internal magnetic field, Hin, on the Zn content.
Hydrocarbon Formation in the Catalytic Conversion of Methanol Over Zeolite ZSM‐5
Authors: Chao Kuei‐Jung , Wei Min‐Shan , Lo Jiunn‐Guang , Shyu Shio‐Jin 
Published: June 2015

AbstractThe reaction mechanism of methanol conversion to hydrocarbons on HZSM‐5 zeolite was studied. From the selectivity plots of products in an integral fixed‐bed flow reactor, paraffins were classified as primary and secondary stable products, light olefins as primary unstable products, aromatics as primary and secondary unstable or stable products. The results of the 14C‐labelled methanol reaction indicated that the C1–C5 surface intermediates generated by dimethyl ether / methanol equilibrium gave paraffins and olefins at 300°C. The concentration of intermediates and adsorbed methanol on ZSM‐5 decreased with increasing temperature. The distribution of radioactivity showed that propylene played an important role in the autocatalysis of the reaction.
Iron (III) Ion Selective Electrode Based on Dithia 12‐Crown‐4
Authors: Wang Tzong‐Yaw , Shih Jeng‐Shang 
Published: June 2015

AbstractAn iron (III) ion selective PVC membrane electrode based on 1,7‐dithia 12‐crown‐4 as a neutral carrier was prepared. Monovalent responses with a Nerstian slope of 56+1 mV/decade was observed for the Fe (III) ion‐selective electrode within the concentration range 10−3–10−5 M Fe (NO3)3. The monovalent responses may be attributed to the formation of Fe (OH)2+ or Fe (OH)2(H2O)+4 species in aqueous solutions and the absorption of these ions into the PVC electrode membrane. The electrode exhibited good selectivity for Fe (III) in comparison with various alkali, alkali‐earth and some heavy metal ions. The effects of the composition of the membrame, addition of STPB (sodium tetraphenyl borate), the concentration of internal solution of the electrode and anions in the test solutions were discussed.
Polarography of Uranium Chelate with 2,3‐Cresotic Acid
Authors: Chen S.N. , Chen T.H. , Gi H.C. , Wang J.J. 
Published: June 2015

AbstractThe polarography of uranyl ion in 2,3‐cresotic acid solution has been studied at 25°C under varying conditions of ligand concentration and pH. The ligands species were proved to be a 2,3‐cresotate anion. The half‐wave potential vs. pH value interpreted on the basis of pK value for the acid ionization, and resulted in agreement with the deduction.The mole ratio of metal to ligand was found to be 1:1 and 1:2 by conductometric titration. At pH < pK1, the complex species of UO2(H2A)2+ and UO2(HA)+ was identified. At pK1 < pH < pK2, the co‐existence of UO2(HA)+, UO2(OH)(HA)2− and UO2(A)22– was confirmed. At pH > pK2, the complex species of UO2(OH) (A)23– was formed.
Preparation and Characterization of Dioxotungsten (VI) Complexes of Schiff Bases Derived from Salicylaldehydes and O‐Aminothiophenol
Authors: Gupta Mala , Kansal B.D. 
Published: June 2015

AbstractSeveral dioxotungsten(VI) complexes of the type WO2L and WO2L.X (where LH2 = Schiff base derived from o‐aminothiophenol and salcylaldehyde, 5‐chlorosalicylaldehyde, 5‐bromosalicylaldehyde, and X = dimethyl formamide, dimethyl sulfoxide or pyridine) have been prepared and characterized by elemental analysis, electrical conductance, magnetic and spectral measurements. These complexes are non‐electrolyte, diamagnetic, six‐coordinated and possess an octahedral geometry.
Organotransition‐Metal Complexes of Multidentate Ligands 5. Structural Characterization of Cis‐Tetracarbonyl(3,5‐Dimethylpyrazol‐1‐Yl) Methanemolybdenum(0)
Authors: Shiu Kom‐Bei , Chang Cho‐Jin , Wang Yu , Cheng Ming‐Chu 
Published: June 2015

AbstractThe title compound crystallizes in space group P 21/c of the monoclinic system in a cell of dimensions: a = 9.231(2), b = 15.931(2), c = 12.420(2) Å, β = 108.37(1)°. The observed density is 1.60 g/cm3 and the density calculated for four molecules in the cell is 1.58 g/cm3. The refinement converged with R = 0.029 and Rw = 0.028 based on 2569 reflections with I > 2.5 σ. The molecule has approximate Cs symmetry with a mirror plane roughly containing the central Mo atom and two cis‐carbonyls, C(1)O(1) and C(4)O(4), while bisecting the bidentate, H2CPz2, and two trans‐carbonyls. The four carbonyls and tine bidentate adopt a quasi‐octahedral arrangement around the Mo atom. The C(NN)2Mo linkage of the (H2CPz′2)Mo fragment is observed to be in the boat form. The two cis‐carbonyls are bent away by the bulky H2CPz′2 bidentate giving ∠C(1)‐Mo‐C(4) ≃ 167.3(1)°. The distortion explains the facile allyl bromination and decarbonylation observed for the title compound.
Nickel Boride Catalyst in Organic Synthesis—The Effects of Promoters on Nickel Borides for Hydrogenation Reactions
Authors: Chen Yin‐Zu , Sheu Lin‐Lon , Rei Min‐Hon 
Published: June 2015

AbstractCr, Co and Rh were introduced into P‐1, P‐2 and P‐2W nickel boride catalysts as promoters. The substrates of cyclohexanone and cyclohexene were used to examine the effects of those promoters on nickel borides for hydrogenation reactions. On cyclohexanone with strongly‐polared carbonyl group, Cr, Co and Rh are effective for all nickel borides. On cyclohexene with slightly‐polared olefinic group, Rh is also good for all nickel borides. But Cr and Co are only effective for P‐2W and P‐1 nickel borides respectively.
Synthesis of Alkyllysophospholipid Analogues with Readily Functionalized 1‐O‐Alkyl Side Chain
Authors: Tsai Yeun‐Min , Jiang Shu‐Li 
Published: June 2015

AbstractSynthesis of alkyllysophospholipid analogues 5a and 5b are described. These lipids have imide functional group attached on the terminal of 1‐O‐alkyl side chain suitable for further manipulations. Our approach features the use of mesylate 8 in which the mesyl group serves both as protecting group and electrophile.