THE REACTION OF TRIALKYLBORANES WITH LITHIUM ACETYLIDES PREPARED FROM TRIETHYL ORTHOPROPIOLATE AND PROPIOLALDEHYDE DIETHYL ACETAL
作者:Shoji Hara、Hidetaka Dojo、Tatuo Kato、Akira Suzuki
DOI:10.1246/cl.1983.1125
日期:1983.7.5
Lithium acetylides with functional groups such as orthoester or acetal group in the molecule react with trialkylboranes with the migration of alkyl groups. The oxidation of the intermediates obtained from triethyl orthopropiolate gives a mixture of β-hydroxy-and α,β,-unsaturated esters, and the oxidation of those from propiolaldehyde diethyl acetal gives (E)-1-ethoxy-1-alken-3-ones respectively.
分子中带有原酸酯或缩醛等官能团的乙炔锂与三烷基硼烷反应,伴随着烷基的迁移。从原丙酸三乙酯得到的中间体氧化得到 β-羟基-和 α,β,-不饱和酯的混合物,从丙醛二乙缩醛得到的中间体氧化得到 (E)-1-ethoxy-1-alken-3-分别。