Yalda, R; Rao, V. Subrahmanyeswara; Rao, Jampani Madhusundana, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1982, vol. 21, # 11, p. 1046 - 1048
chemoselective and metal/additive-free protocol for the synthesis of propargylic cyclic imine derivatives via (3 + 2)-cycloaddition of donor–acceptor cyclopropanes and alkynylnitriles in the presence of BF3·OEt2 has been established. The newly developed methodology provided access to a variety of propargylic cyclic imines in good to excellent yields. In addition, the synthesis of propargylic amines and the
Copper mediated oxidative coupling between terminal alkynes and CuCN
作者:Yihang Li、Dunfa Shi、Pengqi Zhu、Hongxing Jin、Shuo Li、Feng Mao、Wei Shi
DOI:10.1016/j.tetlet.2014.11.108
日期:2015.1
A direct oxidative cross coupling between terminal alkynes and CuCN to form 1-cyanoalkynes was reported. FeCl3 was employed as the sole additive. The reaction could be carried out under mild conditions, with moderate to good yields. (C) 2014 Published by Elsevier Ltd.
Cyanoacetylene-driven base catalyzed synthesis of dihydropyrimidophenanthridinones from phenanthridine and water
作者:Kseniya V. Belyaeva、Lina P. Nikitina、Anastasiya G. Mal’kina、Andrei V. Afonin、Boris A. Trofimov
DOI:10.1016/j.mencom.2020.01.004
日期:2020.1
3-Arylpropynenitriles are readily annulated with phenanthridine in the KOH/H2O/MeCN system at room temperature to afford 4-aryl-1,13b-dihydropyrimido[1,2-f]phenanthridin-2-ones. The moderate yield of the products can be rationalized by the anionic oligomerization of an intermediate zwitterion adduct of the reactants. The reaction represents a single-stage access to a new family of pharmaceutically prospective compounds.