Diastereoselective electrophilic amination of ketone enolates in 2-substituted 2-acyl-1,3-dithiane 1-oxides
作者:Philip C.Bulman Page、Steven M. Allin、Eric W. Collington、Robin A.E. Carr
DOI:10.1016/0040-4039(94)85237-5
日期:1994.4
Enolate anions derived from 2-substituted 2-acyl-1,3-dithiane 1-oxides react readily with the nitrogen electrophile di-tert-butyl azodicarboxylate (DBAD) to give α-aminoketones with good diastereoselectivity and in reasonable yields; in some cases diastereoselectivity appears sufficiently high that the minor isomer cannot be detected by 400 MHz 1H NMR spectroscopy.
由2-取代的2-酰基-1,3-二硫杂环丁烷1-氧化物衍生的乙醇酸根阴离子易于与亲电氮的偶氮二羧酸二叔丁酯(DBAD)反应生成具有良好非对映选择性和合理收率的α-氨基酮。在某些情况下,非对映选择性显得足够高,以至于较小的异构体无法通过400 MHz 1 H NMR光谱法检测到。
BULMAN, PHILIP C.;NAMWINDWA, ERNEST S.;KLAIR, SUKHBINDER S.;WESTWOOD, DON+, SYNLETT.,(1990) N, C. 457-459
作者:BULMAN, PHILIP C.、NAMWINDWA, ERNEST S.、KLAIR, SUKHBINDER S.、WESTWOOD, DON+