Synthesis of Cyclopropenes via
1,2-Elimination of Bromocyclopropanes Catalyzed by Crown
Ether
作者:Michael Rubin、William Sherrill、Ryan Kim
DOI:10.1055/s-0028-1088122
日期:——
synthetic protocol for the preparation of 3,3-disubstituted cyclopropenes from the corresponding bromocyclopropanes via a base-assisted 1,2-elimination has been developed. Employment of catalytic amounts of 18-crown-6 in ethereal solvents allowed for improved yields, as compared to the classical procedure employing dimethyl sulfoxide, making this protocol applicable to the synthesis of hydrophilic cyclopropenes