The organocuprates derived from reaction of Grignard reagents with CuBr·Me2S react with 5-lithio-2,3-dihydrofuran and 6-lithio-3,4-dihydro-2H-pyran via a 1,2-metallate rearrangement to generate an alkenylmagnesium cuprate.
Boron trifluoride assisted opening of epoxides by lithium alkenyl aluminate reagents
作者:A. Alexakis、D. Jachiet
DOI:10.1016/s0040-4020(01)85130-9
日期:1989.1
Alkenyl aluminate reagents, obtained by hydroalumination of terminal alkynes followed by ate complexation with Meli, react readily with poorly reactive cyclic ethers such as cyclohexene oxide and oxetane, in the presence of BF3·Et2O. Alkenyl aluminate reagents obtained by reaction of an alkenyl tithium reagent and Me3Al behave similarly.