Highly efficient one-pot synthesis of α,α-disubstituted selenoamides and their first reduction to amines
摘要:
alpha,alpha-Disubstituted selenoamides are synthesized from terminal acetylenes, selenium, amines and allylic bromides in good to high yields; their reduction with LiAlH4 affords alkenylamines quantitatively.
Sequential Addition Reactions of Lithium Acetylides and Grignard Reagents to Selenoiminium Salts Leading to 2-Propynyl Tertiary Amines Bearing a Tetrasubstituted Carbon Center
作者:Toshiaki Murai、Sho Nogawa、Yuichiro Mutoh
DOI:10.1246/bcsj.80.2220
日期:2007.11.15
Selenoiminium salts generated in situ from selenoamides and MeOTf were reacted sequentially with lithium acetylides and Grignardreagents to give 2-propynyl tertiary amines bearing a tetrasubstitut...
Reactions of α, α-disubstituted selenoamides with organolithium reagents leading to unsymmetrical ketones
作者:Toshiaki Murai、Tatsuya Ezaka、Shinzi Kato
DOI:10.1016/s0040-4039(98)00764-3
日期:1998.6
alpha,alpha-Disubstituted selenoamides were easily converted to unsymmetrical ketones in high yields by the reaction with alkyllithiums, whereas the reaction with alkynyllithium and methyl iodide gave alpha,beta-unsaturated ketone and dialkynylamine. (C) 1998 Elsevier Science Ltd. All rights reserved.