New Uses for the Burgess Reagent in Chemical Synthesis: Methods for the Facile and Stereoselective Formation of Sulfamidates, Glycosylamines, and Sulfamides
作者:K. C. Nicolaou、Scott A. Snyder、Deborah A. Longbottom、Annie Z. Nalbandian、Xianhai Huang
DOI:10.1002/chem.200400503
日期:2004.11.19
Although the Burgess reagent (methoxycarbonylsulfamoyltriethylammonium hydroxide, inner salt) has found significant use in chemical synthesis as a dehydrating agent, almost no work has been directed towards its potential in other synthetic applications. As this article will detail, we have found that the Burgess reagent is remarkably effective at accomplishing a number of non-dehydrative synthetic
Kinetic Resolution of 1,2-Diols via NHC-Catalyzed Site-Selective Esterification
作者:Bin Liu、Jiekuan Yan、Ruoyan Huang、Weihong Wang、Zhichao Jin、Giuseppe Zanoni、Pengcheng Zheng、Song Yang、Yonggui Robin Chi
DOI:10.1021/acs.orglett.8b01029
日期:2018.6.15
A kinetic resolution of 1,2-diols bearing both a secondary and a primary alcohol motif through an N-heterocyclic carbene-catalyzed oxidativeacylation reaction has been developed. A site- and enantioselective esterification reaction is involved for this process. Both the monoacylated diols obtained and the remaining enantioenriched 1,2-diols are versatile building blocks for the preparation of functional
Synthesis of 2-hydroxy-2-phenylethylamino derivatives as potential α-adrenergic blocking agents
作者:M. Alvarez、R. Granados、R. Lavilla、M. Salas
DOI:10.1002/jhet.5570220326
日期:1985.5
synthesis of N,N'-bis[6-(2-hydroxy-2-phenylethylamino)hexyl] cystamines 4, and N-(2-hydroxy-2-phenylethyl)-1,6-hexanediamines 6 are described. Compounds 4 were obtained by condensation of the requisite epoxide 2 with 3-(6-aminohexyl)-1,3-thiazolidine followed by dimerization with opening of the thiazolidine ring. A similar method was used for the preparation of compounds 6. In order to prepare 4j (N,N'-bis6-[2-hydroxy-2(3
CYANO SUBSTITUTED HETEROARYLPYRIMIDINONE DERIVATIVE, PREPARATION METHOD AND USE THEREOF
申请人:ZHEJIANG HISUN PHARMACEUTICAL CO., LTD.
公开号:US20200102322A1
公开(公告)日:2020-04-02
The present invention relates to a cyano-substituted heteroarylpyrimidinone derivative represented by formula (I), a preparation method therefor and a use thereof as a therapeutic agent, in particular a use as an acetyl-CoA carboxylase (ACC) inhibitor, and the definition of each substituent in formula (I) is the same as the definition in the description.
Ru-MACHO-Catalyzed Highly Chemoselective Hydrogenation of α-Keto Esters to 1,2-Diols or α-Hydroxy Esters
作者:Weijun Tang、Jianliang Xiao、Shaochan Gao、Minghui Zhang、Chao Wang
DOI:10.1055/s-0035-1561971
日期:——
catalyst has been shown to be highly effective for the hydrogenation of a wide range of α-keto esters, affording either diols or hydroxy esters depending on the choice of reaction conditions. Strong base, high temperature, and pressure favor the formation of diols whilst the opposite is true for the hydroxy esters.