N,N,N′,N′-tetramethylmethanediamine—A new reagent for aminomethylation of acetylenes
摘要:
A new procedure has been developed for aminomethylation of terminal acetylenes with N,N,N',N'-tetramethylmethanediamine in the presence of transition metals and lanthanide complexes and salts. The procedure ensures formation of the corresponding N,N-dimethylprop-2-yn-l-amines with high yield and selectivity.
Cp2ZrCl2-Catalyzed cycloalumination of acetylenic alcohols and propargylamines by Et3Al
作者:I. R. Ramazanov、R. N. Kadikova、U. M. Dzhemilev
DOI:10.1007/s11172-011-0013-2
日期:2011.1
The Cp2ZrCl2-catalyzed cycloalumination of acetylenic alcohols and propargylamines by Et3Al was studied. The process affords 2,3-disubstituted alumacyclopent-2-enes, which were identified by the analysis of the products of their deuterolysis and hydrolysis. The cycloalumination of alkyl- and phenyl-substituted propargylamines proceeds with high regio- and stereoselectivity to give the corresponding allylamine derivatives in high yield. Unlike the phenyl derivatives, the cycloalumination of alkyl-substituted acetylenic alcohols (propargyl, homopropargyl, and bishomopropargyl alcohols) is not regioselective.
Titanium(IV) isopropoxide and ethylmagnesium bromide catalyzed reaction of 2-alkynylamines with Et2Zn, followed by deuterolysis/hydrolysis and iodinolysis, affords substituted (Z)-pent-2-en-2,5-d 2-1-amines, (Z)-pent-2-en-1-amines (65–88%), and substituted (Z)-2,5-diiodopent-2-en-1-amines (55–63%). It is suggested that the reaction proceeds through the formation of cyclic organotitanium derivatives. The
Synthesis of 2,3-acetylenic amines by aminomethylation of acetylenes with geminal diamines
作者:M. G. Shaibakova、I. G. Titova、G. A. Makhmudiyarov、A. G. Ibragimov、U. M. Dzhemilev
DOI:10.1134/s1070428010010021
日期:2010.1
A general and effective procedure has been developed for the synthesis of symmetrical and unsym- metrical 2,3-acetylenic amines by aminomethylation of terminal mono- and diacetylenes with geminal diamines in the presence of transition metal salts and complexes.
Kuznetsov,S.G. et al., Journal of Organic Chemistry USSR (English Translation), 1970, vol. 6, p. 441 - 445
作者:Kuznetsov,S.G. et al.
DOI:——
日期:——
Guermont, Memorial des services chimiques de l'Etat, 1955, vol. 40, p. 147,165