Novel uncatalysed Michael reactions of lithium trialkylalkynylborates with alkylidenemalonates and alkylideneacetoacetates.
作者:Andrew Pelter、J.Madhusudhana Rao
DOI:10.1016/0040-4039(81)80155-4
日期:1981.1
Alkynylborates and alkylidenemalonates and alkylideneacetoacetates undergo unusual Michael reactions which involve migration of alkyl groups from boron to carbon, to yield products of synthetic value.
Reaction of carbon dioxide with trialkylalkynyl borates — a novel method for the synthesis of stereospecific α,β-unsaturated acids
作者:Deng Min-zhi、Tang Yong-ti、Xu Wei-hua
DOI:10.1016/s0040-4039(01)90044-9
日期:——
Carboxylation of lithium trialkylalkynylborate can take place under favourable conditions. Protonation of the reaction product yields (Z)-α,β-unsaturated acid.
The stereoselective allylation of lithium trialkylalkynylborates by allyl carbonate in the presence of Pd(PPh3)4
作者:Yan Chen、Nan-Sheng Li、Min-Zhi Deng
DOI:10.1016/s0040-4039(00)97373-8
日期:1990.1
The reaction of allylcarbonate with lithiumtrialkylalkynylborates catalysed by Pd(PPh3)4, affords 1,4-alkadienes in good yields and high stereoselectivity.