有机化学 ›› 1993, Vol. 13 ›› Issue (3): 295-296. 上一篇    下一篇

研究论文

有机硼化合物的一些新的高选择性反应

李南生;陈燕;邓敏智   

  1. 中国科学院上海有机化学研究所
  • 发布日期:1993-06-25

Some new highselective reactions of organoboron compounds

LI NANSHENG;CHEN YAN;DENG MINZHI   

  • Published:1993-06-25

首次发现二氧化碳在加压下能羧基化三烷基炔基硼酸锂,反应中,二氧化碳攻击炔基的β-碳子,一个烷基从硼迁移到炔基的α-碳,随后质子化给出立体选择的(Z)-α,β-不饱和羧酸.

关键词: 羧酸, 羧基化, 二氧化碳, 硼酸盐 P, 有机硼化合物, 烷基, 炔烃 P

CO2 under pressure (2.5 x 105 Pa) reacts with lithium alkylalkynylborates [R13BCYCR2]- Li+ to afford, after protonation, (Z)-R1CH:CR2CO2H (R1 = hexyl, heptyl, octyl, R2 = Bu, pentyl, Ph) in 70-80% yield. In the reaction, CO2 attacked the b-carbon of the alkynyl group and an alkyl group migrated from boron to the a-carbon. Other selective reactions of organoboron compounds are summarized.t

Key words: CARBON DIOXIDE, CARBOXYLATION, BORATES P, CARBOXYLIC ACID, ORGANO BORON COMPOUNDS, ALKYNE P, ALKYL

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