A facile and economical procedure for the synthesis of maleimide derivatives using an acidic ionic liquid as a catalyst
作者:Kai Li、Chao Yuan、Shijun Zheng、Qiang Fang
DOI:10.1016/j.tetlet.2012.06.025
日期:2012.8
in good yields and high purity from the corresponding maleamic acids using a Brønsted acidic room temperature ionic liquid (RTIL) as a catalyst. The products were obtained through merely a decanting and removal of the solvent, suggesting that this procedure is superior to the conventional routes, in which the strong organic/inorganic acids were used as the catalysts, as well as a complicated post-processing
Synthesis of 2'-deoxyuridine and 5-fluoro-2'-deoxyuridine derivatives and evaluation in antibody targeting studies
作者:Thomas F. G. Henn、Martin C. Garnett、Siri Ram Chhabra、Barrie W. Bycroft、Robert W. Baldwin
DOI:10.1021/jm00063a007
日期:1993.5
Derivatives of 2'-deoxyuridine and of the anticancer agent 5-fluoro-2'-deoxyuridine (FdUR) were linked indirectly via a human serum albumin carrier (HSA) to the murine antiosteosarcoma monoclonal antibody 791T/36. Starting from the 2'-deoxyuridines 1a and 1b, the new nucleosides containing 5'-succinamic acid 7 and 5'-maleamic acid 8 spacers were synthesized from the key intermediate 5'-aminonucleoside
Method for the preparation of quinoline-2,3-dicarboxylic acid
申请人:American Cyanamid Company
公开号:US04757146A1
公开(公告)日:1988-07-12
The present invention relates to novel methods for the preparation of quinoline-2,3-dicarboxylic acid, useful for the preparation of the highly effective 2-(2-imidazolin-2-yl)quinoline-3-carboxylic acid herbicidal agents.
First Triphenylphosphine PromotedReduction of Maleimides to Succinimides
作者:Venkatachalam S. Giri、Bikash Pal、Prasun K. Pradhan、Parasuraman Jaisankar
DOI:10.1055/s-2003-40523
日期:——
Triphenylphosphine (TPP) in refluxing methanol effectively reduces maleimides 1a-g to the corresponding succinimides 2a-g in good yields. It was observed that some maleimides obtained from aromatic halogen compounds 1h-j were transformed into the corresponding succinamic acid methyl esters 3a-c by this reaction.