Tandem Thioacylation-Intramolecular Hydrosulfenylation of Propargyl Amines - Rapid Access to 2-Aminothiazolidines
作者:Ravi P. Singh、Delphine Gout、Carl J. Lovely
DOI:10.1002/ejoc.201801505
日期:2019.2.28
A metal‐free coupling reaction between propargylamines and isothiocyanates affords good yields of vinylidene substituted thiazolidines. Control reactions suggest that these reactions are in fact mediated by silica gel. A broad substrate scope and a variety of substitution patterns are accessible.
Thiol-Yne Coupling of Propargylamine under Solvent-Free Conditions by Bond Anion Relay Chemistry: An Efficient Synthesis of Thiazolidin-2-ylideneamine
作者:Alok Ranjan、Abhijit S. Deore、Swapnil G. Yerande、Dattatraya H. Dethe
DOI:10.1002/ejoc.201700603
日期:2017.8.2
Thiol-ynecoupling of propargylamine with isothiocyanate has been developed under metal and solvent free condition. The addition of propargylamine on isothiocyanate gives propargylthiourea. This intermediate in situ undergoes intramolecular 5-exo-dig cyclization to give thiazolidin-2-ylideneamine. This through bondanionrelay reaction occurs by attack of sulphur (not nitrogen) on alkyne in highly
Facile and diverse microwave-assisted synthesis of secondary propargylamines in water using CuCl/CuCl<sub>2</sub>
作者:Tran Thi Thu Trang、Denis S. Ermolat'ev、Erik V. Van der Eycken
DOI:10.1039/c4ra16005c
日期:——
A highly efficient microwave-assisted three-component reaction between an aldehyde, a primary amine and an alkyne was developed using an inexpensive Cu(i)/Cu(ii) catalytic system and water as solvent.
Efficient Microwave-Assisted Synthesis of Secondary Alkylpropargylamines by Using A<sup>3</sup>-Coupling with Primary Aliphatic Amines
作者:Jitender B. Bariwal、Denis S. Ermolat'ev、Erik V. Van der Eycken
DOI:10.1002/chem.200903143
日期:2010.3.15
Three‐component coupling reaction: An efficient, microwave‐assisted, CuI‐catalysed A3‐coupling reaction with primaryaliphaticamines that gives access to secondary propargylamines is described (see scheme).
Base-Mediated Hydroamination of Propargylamine: A Regioselective Intramolecular 5-<i>exo-dig</i> Cycloisomerization en Route to Imidazole-2-thione
作者:Alok Ranjan、Ragini Yerande、Prasad B. Wakchaure、Swapnil G. Yerande、Dattatraya H. Dethe
DOI:10.1021/ol502871r
日期:2014.11.7
An intramolecular transition-metal-free base-mediated hydroamination of propargylamine with isothiocyanates has been achieved. This atom-economical, regioselective intramolecular 5-exo-dig cycloisomerization was utilized for the one-pot synthesis of diversely substituted imidazole-2-thione and spiro-cyclic imidazolidine-2-thione. The reaction goes to completion at room temperature via propargylthiourea and 6597% isolated yields were obtained.