Selenonium ylides: synthesis, characterization, and applications to photo-induced cyclopropanation reactions
作者:Eiji Yamaguchi、Hisamori Inagawa、Akichika Itoh
DOI:10.1007/s43630-021-00155-2
日期:2022.5
highly reactive intermediates for the synthesis of various complex molecules. They are now an indispensable chemical species in organic chemistry and are used frequently to synthesize complex compounds in drug discovery chemistry. In general, carbenes are synthesized by a combination of transition metal catalysts and diazo compounds or by the decomposition reactions of diazo compounds. This paper reports
Sc(OTf)3-catalyzed smooth tandem [3+2] cycloaddition/ring opening of donor–acceptor cyclopropane 1,1-diesters with enol silyl ethers
作者:Jie Fang、Jun Ren、Zhongwen Wang
DOI:10.1016/j.tetlet.2008.09.028
日期:2008.11
Catalyzed by Lewis acids, donor-acceptor cyclopropane 1,1-diesters reacted with enol silyl ethers to afford 1,6-dicarbonyl compounds in moderate to excellent yields. This supplied a mild carbon-carbon bond-forming method from the ring opening of cyclopropanes. A smooth tandem [3+2] cycloaddition/ring opening process has been clearly proved by an independent experiment. (C) 2008 Elsevier Ltd. All rights reserved.