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Regioselective and Stereoselective Synthesis of the 3-Aryl-4- phosphoryl-1, 2, 4-triazoline-5-ones

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Chinese Chemical Letters 2006年第9期17卷 1145-1148页

作者： De Xin FENG ru yu chen You HUANG Institute of Elemento-Organic Chemistry National Key Laboratory of Elemento-Organic Chemistry Nankal University Tianjin 300071

A novel and efficient route of synthesizing 1, 2, 4-triazoline-5-ones is reported. The title compounds can be prepared in high yield and purity by the one-pot oxidation and cyclization of 1-acylthiosemicarbazides. The... 详细信息

关键词： Triazoline 1-acylthiosemicarbazides regioselective stereoselective cyclization.

Facile Synthesis of Five-membered Phosphoroheterocycles Bearing N-P-N and S-P-N Moieties

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Chinese Chemical Letters 2001年第12期12卷 1065-1068页

作者： Sheng Lou DENG Dong Zhi LIU ru yu chen School of Chemical Engineering Tianjin UniversityTianjin 300072 Institute of Elemento-Organic Chemistry Nankai UniversityTianjin 300071

New reactions of Lawesson reagent (LR) with alpha -hydroxy (amino)nitriles have been studied. The experimental results showed that the five-membered phosphoroheterocycles 2 and 4 bearing N-P-N or S-P-N moiety could be... 详细信息

关键词： new reactions Lawesson reagent nitriles phosphoroheterocycle mechanism

Convenient and One-pot Method for Synthesis of the Aminomethylene Bisphosphonic Acid Derivatives from Aldehydes

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Chinese Chemical Letters 2006年第6期17卷 765-768页

作者： Xiang Zhu ZHANG Ming Shu WU You HUANG ru yu chen Department of Chemical Engineering Institute of Anyang Technology Anyang 455000 Institute and National Key Laboratory of Elemento-Organic Chemlstry Nankai University Tianjin 300071

Simple, efficient and convenient synthesis of aminomethylene bisphsophonic acid derivatives in one-pot reaction using aldehydes, hydroxylamine hydrochloride, phosphours trichloride and water as starting materials in t... 详细信息

关键词： Aminomethylene bisphosphonic acid derivatives aldehydes hydroxylamine hydrochloride phosphours trichloride.

STUDIES ON THE REACTION OF d-ACETAMIDCCINNAMAMIDE WITH TRIS(DIETHYLAMINO)PHOSPHINE

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Chinese Chemical Letters 1992年第3期3卷 183-184页

作者： chen Xi LI ru yu chen Institute of Elemento-organic Chemistry Nankai UniversityTianjin300071

d-Acetamidocinnamamide do not react with P(OMe)_3, with P(NEt_2)_3 they give rise to 2-methyl-4-hydroxy-5-d-[bis(diethylamino)phosphoryl] benzyl *** pathway is studied for the formation of Ⅰ. The two intermediates(Ⅱ... 详细信息

关键词： STUDIES ON THE REACTION OF d-ACETAMIDCCINNAMAMIDE WITH TRIS DIETHYLAMINO)PHOSPHINE Rev

1,2-Cyclic Monoacyl-rac-Glycerothio-phosphates of Cantharidin Analogues

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Chinese Chemical Letters 1999年第2期10卷 113-114页

作者： Zheng Hong ZHOU ru yu chen(Institute of Elemento-Oganic Chemistry, Nankai University, Tianjin 300071) Inst. of Elemento-Oganic Chemistry Nankai University Tianjin 300071 China

A series of 1,2-cyclic monoacyl-rac-glycerothiophosphates of cantharidin and its analogues were synthesized in a one-pot procedure in overall yields of 44 similar to 55.5% by means of hexaethylphosphorus triamide as p... 详细信息

关键词： synthesis cantharidin and its analogues cyclic glycerothiophosphate

A Facile Synthsis of ω-Bromo-Diene Via Solid/LiquidTransferred Wittig Reactions of ω-Bromobutyltriphenylphosphonium Salts With α.β -Unsaturated Aldehydes

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Chinese Chemical Letters 1999年第11期10卷 911-914页

作者： De Qing SHI ru yu chen(Research Institute of Elemento Organic Chemistry, NanKai University,Tianjin 300071) Res. Inst. of Elemento Organ. Chem. NanKai University Tianjin 300071 China

A new approach to the synthesis of co -bromo-dienes was carried out by usingsolid/liquid transferred Wittig reactions between in -bromobutyltriphenylphosphoniumsalt and Q. 6 -unsaturated aldehydes.

关键词： Wittig reactions w -bromoalkyltriphenylphosphonium salts synthesis w- bromo-dienes stereoselectivity.

SYNTHESIS OF PHOSPHONO-DIPEPTIDES BY MANNICH-TYPE AND ARBUZOV-TYPE REACTIONS

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Chinese Chemical Letters 1995年第10期6卷 861-862页

作者： ru yu chen Qing DAI(Institute of Elemento-Organic Chemistry,Nankai University, Tianjin, 300071) Nankai Univ Inst Elementoorgan Chem Tianjin 300071 Peoples R China

Two kinds of phosphono-dipeptides have been synthesized by the Mannich-type or Arbuzov-type reaction. The structures of new products have been confirmed by H-1 NMR, P-31 NMR, IR, MS and elemental analyses.

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Synthesis of 1-[(O,O-diphenyl phosphonyl)arylmethyleneamino carbonylmethyl]uracils

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Chinese Chemical Letters 1999年第9期10卷 739-740页

作者： Xue Jun LIU Guo chen CHI ru yu chen(Institute and National Key Laboratory of Elemento-Organic Chemistry, Nankai UniversityTianjin 300071) Inst. Natl. Key Lab. Elemento-O. Nankai University Tianjin 300071 China

A new series of compounds, 1-[(O,O-diphenyl phosphonyl)arylmethylene aminocarbonylmethyl]uracils, were synthesized in yield of 54.6-72.0% with DCC/BtOH as the coupling reagent, and their biological activities are bein... 详细信息

关键词： uracil alpha-aminophosphonic acid

STUDY ON THE MANNICH-TYPE REACTION OF P-TOLUENESULFONAMIDE

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Chinese Chemical Letters 1995年第3期6卷 181-184页

作者： ru yu chen Qing DAI (Institute of Elemento-Organic Chemistry, Nankai University. Tianjin, 300071) Nankai Univ Inst Elementoorgan Chem Tianjin 300071 Peoples R China

The Mannich-type reactions of p-toluenesulfonamide with trichlorophosphine, dichlorophenylphosphine, diethyl phosphite, or triphenylphosphite were studied. The structures of new products were confirmed by (HNMR)-H-1, ...

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