Auto de-bromine-coupling reactions of 1-aryl-7-bromocycloheptenes
摘要:
Auto de-bromine-coupling reactions of 1-aryl-7-bromocycloheptenes to a new series of [7-6-6] tricyclic system were described. A variety of substituents at the para-position of the phenyl were amenable to this transformation, including electron-donating groups and halides. The presence of electron-donating groups resulted in a more efficient reaction, with higher yields than the case of halides. (C) 2014 Elsevier Ltd. All rights reserved.
Addition of hypobromous acid to 1-phenylcycloalkenes
作者:M. Ceylan、E. Findik、E. Sahin、C. Kazaz
DOI:10.1007/s11172-009-0321-y
日期:2009.11
Reaction of 1-phenylcyclooctene and 1-phenylcycloheptene with N-bromosuccinimide (NBS) in aqueous DMSO gives the corresponding 3-bromo-2-phenylcycloalkenes and 2-phenylcycloalk-2-enols in a ratio of 3 : 1. Unlike them, 1-phenylcyclohexene gives a mixture of 3-bromo-2-phenylcyclohexene and 2-bromo-l-phenylcyclohexanol. The oxidation of allylic alcohols with pyridinium chlorochromate afforded the corresponding