The gem-difluoromethylene (CF2) group significantly accelerates ring-closing metathesis of 1,8-nonadienes relative to the methylene (CH2) group demonstrating similar rate accelerations to that observed for the classic Thorpe-Ingold substituents, diester malonates and ketals.
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Δευτέρα 22 Μαΐου 2017
Accelerating influence of the gem-difluoromethylene group in a ring-closing olefin metathesis reaction : a Thorpe-Ingold effect?
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