Efficient synthesis of benzylphosphine oxides and E-stilbenes
作者:Karen M. Brown、Nicholas J. Lawrence、John Liddle、Faiz Muhammad、David A. Jackson
DOI:10.1016/s0040-4039(00)73481-2
日期:1994.9
A series of substituted benzylphosphine oxides has been synthesised by reduction of the corresponding (alpha-chlorobenzyl)phosphine oxide, derived from the benzaldehyde and chlorodiphenylphosphine, with either sodium borohydride (DMSO, 60-70 degrees C, 12 h) or tributyltin hydride and AIBN (C6H6. 80 degrees C, 2 h). Reaction of the (alpha-lithiobenzyl)phosphine oxide with aldehydes gave exclusively E-alkenes.
Catalytic sp<sup>3</sup>C–CN Bond Cleavage: Ni-Mediated Phosphorylation of Alkylnitriles
作者:Ji-Shu Zhang、Tieqiao Chen、Yongbo Zhou、Shuang-Feng Yin、Li-Biao Han
DOI:10.1021/acs.orglett.8b02854
日期:2018.11.2
catalyst is disclosed. A wide range of primary nitriles readily coupled with secondary phosphine oxides to produce the corresponding phosphorylated products in high yields. As a key step, this new method was applied to the synthesis of anticancer drug Combretastatin-A4, significantly shortening its synthetic path.