Journal
ORGANIC LETTERS
Volume 16, Issue 4, Pages 1100-1103Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol403695b
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Funding
- European Union [PIEF-GA-2010-275400]
- Swiss National Science Foundation
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Methylenation of electron-rich olefins is a highly challenging reaction, for which we have developed a new methodology exploiting Pd-catalysis and halomethylboronate reagents, the latter replacing diazomethane and zinc carbenoids as methylene donors. Optimization of the reaction for norbornene and extension to several other olefins are reported, with reasonable-to-excellent yields of cyclopropanes in combination with beta-H elimination products. Several mechanisms are plausible for this methylenation reaction.
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