Synthesis of Trimethyl α-Keto Trithioorthoesters and Dimethyl α-Keto Dithioacetals by Reaction of Acyl Chlorides, Anhydrides, Thiol Esters, and N,N-Dimethylamides with [Tris(methylthio)methyl]lithium
The impact of the presence and amount of [BMIM][NTf2] ionic liquid during the preparation of bulk NiMoS catalysts was investigated. It was clearly shown that these factors have a strong influence on both the morphology and specific surface area of the obtained NiMoS samples. Most interestingly the catalytic activity for the transformation of decanoic acid increased up to three times when IL was present
Chemoselective <i>N</i>-acylation of indoles using thioesters as acyl source
作者:Tianri Du、Xiangmu Wei、Honghong Xu、Xin Zhang、Ruiru Fang、Zheng Yuan、Zhi Liang、Yahui Li
DOI:10.3762/bjoc.18.9
日期:——
The selective acylation of indoles often requires sensitive and reactive acyl chloride derivatives. Here, we report a mild, efficient, functional group tolerant, and highly chemoselectiveN-acylation of indoles using thioesters as a stable acyl source. A series of indoleamides have been obtained with moderate to good yields. In addition, heterocycles, such as carbazole, can also be used as nucleophiles
The Wilkinson complex RhCl(PPh3)(3) catalyzes equilibrating alkylthio exchange reaction of thioesters with disulfides. The treatment of a thioester and a dialkyl disulfide in refluxing diethyl ketone in the presence of RhCl(PPh3)(3) (2.5 mol %) for 1.5 h gave an alkylthio exchanged thioester. The reaction of S-methyl ester was conducted shifting the equilibrium by removing volatile dimethyl disulfide. (c) 2008 Elsevier Ltd. All rights reserved.
POLIVIN, YU. N.;VINOKUROV, V. A.;SILIN, M. A.;KARAXANOV, R. A., IZV. VUZOV. XIMIYA I XIM. TEXNOL., 33,(1990) N, S. 109-111
作者:POLIVIN, YU. N.、VINOKUROV, V. A.、SILIN, M. A.、KARAXANOV, R. A.