Stannyl cyclopropanes by diastereoselective cyclopropanations with (tributylstannyl)-diazoacetate esters catalyzed by Cu(i)N-heterocyclic carbene
作者:Robert E. Gawley、Sanjay Narayan
DOI:10.1039/b509958g
日期:——
Catalyzed cyclopropanations of alkenes with Bu3SnC(N2)CO2R (R = Et, t-Bu) have been achieved in good yield with excellent diastereoselectivity to make stannyl cyclopropanes having two or three stereocenters, one of which is quaternary.