AXMEDOV, SH. T.;AXUNDOVA, M. A.;SADYXOV, N. S., IZV. VUZOV. XIMIYA I XIM. TEXNOL., 1982, 25, N 7, 903-906
作者:AXMEDOV, SH. T.、AXUNDOVA, M. A.、SADYXOV, N. S.
DOI:——
日期:——
US4762566A
申请人:——
公开号:US4762566A
公开(公告)日:1988-08-09
DTBB-catalysed lithiation of 2,3-dichloropropene and related chloroamines: Synthetic applications
作者:Fernando F Huerta、Cecilia Gómez、Albert Guijarro、Miguel Yus
DOI:10.1016/0040-4020(95)00066-h
日期:1995.3
The reaction of 2,3-dichloropropene (1) and different carbonyl compounds (2) with an excess of lithium powder (1:7 molar ratio) in the presence of a catalytic amount of DTBB (5 mol %) in THF at 0°C leads, after hydrolysis with water, to the corresponding methylenic 1,4-diols 3 in a Barbier-type process. The cyclisation of diols 3 under acidic conditions (hydrochloric or phosphoric acid) yields the