A novel method for the synthesis of 2,5-diarylselenophenes
作者:Pavel Arsenyan、Olga Pudova、Edmunds Lukevics
DOI:10.1016/s0040-4039(02)00894-8
日期:2002.7
The reaction of 4-phenyl- or (2-thienyl)-1,2,3-selenadiazoles with 10 equiv. of arylacetylenes leads to the formation of 2,5-diarylselenoplienes in moderate to good yields and 1.4-diarylbuta-1,3-diynes as by-products. (C) 2002 Elsevier Science Ltd. All rights reserved.
One-pot desilylation-Sonogashira coupling
作者:Jan Horstmann、Stefanie Reger、Beate Neumann、Hans-Georg Stammler、Norbert W. Mitzel
DOI:10.1515/znb-2017-0027
日期:2017.6.27
bis(2-methylpyridin-5-yl)acetylene (2), bis(4-fluorophenyl)acetylene (3) and bis(4-trifluoromethylphenyl)acetylene (4) in 60% to 82% yield. In the case of 2, the by-product bis(2-methylpyridin-5-yl)butadiyne (2a) was isolated in 12% yield. The occurring desilylation reaction was investigated by treating bis(phenylethynyl)diphenylsilane (5) under the same conditions. The formation of 1-fluoro-4-(phenylethynyl)benzene