Synthesis of benzo-fused five- and six-membered heterocycles by palladium-catalyzed cyclocarbonylation
摘要:
A novel and simple synthetic methodology, based on palladium-catalyzed cyclocarbonylation reaction, is presented for preparing five- and six-membered benzo-fused heterocycles. A mechanism for the process is also proposed and discussed. (C) 2011 Elsevier Ltd. All rights reserved.
The present invention provides a composition comprising a combination of components A) and B), wherein component A) is a compound of formula (I) and the component (B) is a further fungicide, insecticide or herbicide.
The present invention provides a composition comprising a combination of components A) and B), wherein component A) is a compound of formula (I) and the component (B) is a further fungicide, insecticide or herbicide.
Anisotropic melt-forming polycarbonates and method for making
申请人:GENERAL ELECTRIC COMPANY
公开号:EP0348666A2
公开(公告)日:1990-01-03
Polycarbonates are provided exhibiting anisotropic properties in the melt. Transesterification of diphenylcarbonate is effected in the melt with a mixture of methylhydroquinone and 4,4′-dihydroxybiphenyl. The polycarbonates are found to be insoluble in several common solvents such as chloroform, methylenechloride, and toluene.