Selective and general exhaustive cross-coupling of di-chloroarenes with a deficit of nucleophiles mediated by a Pd–NHC complex
作者:Benjamin J. Groombridge、Stephen M. Goldup、Igor Larrosa
DOI:10.1039/c4cc08920k
日期:——
We report the first example of a general, exhaustive Pd-mediated cross-coupling of polychloroarenes in the presence of a deficit of nucleophiles, mediated by the highly active PEPPSI-IPent catalyst.
[EN] METHOD FOR PRODUCING PYRIDAZINONE COMPOUNDS AND INTERMEDIATE THEREOF<br/>[FR] PROCÉDÉ DE PRODUCTION DE COMPOSÉS DE PYRIDAZINONE ET D'UN INTERMÉDIAIRE DE CEUX-CI
申请人:SUMITOMO CHEMICAL CO
公开号:WO2012033225A1
公开(公告)日:2012-03-15
The present invention relates to a novel method for producing a pyridazinone compound and an intermediate thereof as shown in the following scheme: wherein the symbols are as defined in the specification.
Regioselectivity of the methanolysis of polychlorinated biphenyls
作者:T. Sh. Khaibulova、I. A. Boyarskaya、V. A. Polukeev、V. P. Boyarskii
DOI:10.1134/s1070363216100121
日期:2016.10
Regioselectivity of the methanolysis of lower polychlorinated biphenyls with sodium methoxide in a mixture of methanol and DMSO at 100–130°С was studied. It was found that 2,4,4'-tricholobiphenyl is much more reactive than 2,4-dichlorobiphenyl. This results in different mechanisms of substitution. 2,4-Dichlorobiphenyl reacts with sodium methoxide by the elimination–addition mechanism to form four monosubstitution