作者:Philip C. Bulman Page、Stephen J. Shutlleworth、Mark B. Schilling、David J. Tapolczay
DOI:10.1016/s0040-4039(00)91839-2
日期:1993.10
Lithium enolates of 2-acyl-1,3-dithiane 1-oxides, generated in one pot from 1,3-dithiane 1-oxide, undergo highly diastereoselective alkylation upon treatment with alkyl iodides; similar in situ treatment of these substrates with diiodoalkanes furnishes the corresponding medium-ring cycloalkanones with extremely high diastereoselectivity and in moderate to good yields.
一锅中由1,3-二噻吩-1-氧化物生成的2-酰基-1,3-二噻吩-1-氧化物的烯醇锂在经过烷基碘化物的处理后会发生高度非对映选择性的烷基化反应;用二碘代烷烃对这些底物进行类似的原位处理,可以以极高的非对映选择性和中等至良好的收率提供相应的中环环烷酮。