The Reaction of Propiolic Acid Esters with Tertiary Amines. Formation of Betaines
作者:A. W. McCulloch、A. G. McInnes
DOI:10.1139/v74-534
日期:1974.11.1
Reaction of propiolate esters, H—C≡C—CO2R, with tertiary alkylamines R′3N in highly aqueous media yields betaines of the type trans R′3N+ •CH=CH•CO2−. The spectral and chemical properties of these ...
丙炔酸酯 H-C≡C- R 与叔烷基胺 R'3N 在高水性介质中的反应产生反式 R'3N+•CH=CH•CO2- 类型的甜菜碱。这些的光谱和化学性质...
Unusual O-conjugate addition reactions of β-ketoesters and 1,3-diketones to ethyl propynoate: applications to the synthesis of furans
作者:Jinsung Tae、Kwang-Ok Kim
DOI:10.1016/s0040-4039(03)00151-5
日期:2003.3
Divinyl ethers were synthesized from 1,3-dicarbonyl compounds. Reactions of beta-ketoesters and 1,3-diketones with ethyl propynoate in the presence of N-methylmorpholine produced unusual O-conjugate addition products in good yields. The divinyl ethers derived from 1,3-diketones were utilized for the synthesis of 2,3,5-trisubstituted furans under the standard radical cyclization conditions. (C) 2003 Elsevier Science Ltd. All rights reserved.