A transition-metal-free & diazo-free styrene cyclopropanation
作者:Ana G. Herraiz、Marcos G. Suero
DOI:10.1039/c9sc02749a
日期:——
An operationally simple and broadly applicable novel cyclopropanation of styrenes using gem-diiodomethyl carbonyl reagents has been developed. Visible-light triggered the photoinduced generation of iodomethyl carbonyl radicals, able to cyclopropanate a wide array of styrenes with excellent chemoselectivity and functional group tolerance. To highlight the utility of our photocyclopropanation, we demonstrated
The present invention relates to a metal-free photochemical method for the preparation of cyclopropanes from substrates comprising one carbon-carbon double bond conjugated with an aromatic or heteroaromatic group which advantageously takes place with no need for a photosensitizer. It also relates to certain reagents useful in said transformation.