aliphatic amines, whereas it is quite general regarding the aldehyde, alkyne and isocyanide inputs. The protocol allows the preparation of a wide array of adducts, tandem one-pot processes being also feasible. Mechanistic studies using selected substrates have been used to determine the profile of the reaction and some substitution and functional group limitations. Some post-synthetic transformations of the
A novel efficient method for synthesis of propargylamines via three-component coupling of aryl azide, aldehyde, and alkyne promoted by iron–iodine–copper(I) bromide
作者:Kui Zhang、You Huang、Ruyu Chen
DOI:10.1016/j.tetlet.2010.08.024
日期:2010.10
A novel, efficient method has been developed for the synthesis of propargylamines through a three-component coupling of aryl azides, aldehydes, and alkynes in the presence of iron–iodine–copper(I) bromide as catalyst. This method is the first example for directly using aryl azides as an amino component in a three-component coupling reaction. Some of the major advantages of this protocol are: good yields
Imidazolium salts are privileged compounds in organic chemistry, and have valuable biological properties. Recent studies show that symmetric imidazolium salts with bulky moieties can display antiparasitic activity against T. cruzi. After developing a facile methodology for the synthesis of tetrasubstituted imidazolium salts from propargylamines and isocyanides, we screened a small library of these
咪唑鎓盐是有机化学中的特殊化合物,具有宝贵的生物学特性。最近的研究表明,具有庞大部分的对称咪唑鎓盐可以显示对 T. cruzi 的抗寄生虫活性。在开发了一种从炔丙基胺和异氰化物合成四取代咪唑盐的简便方法后,我们筛选了这些加合物的小型库,以对抗非洲和美洲锥虫病的病原体。这些化合物对 T. brucei 具有纳摩尔活性,对 T. cruzi 具有低(或亚)微摩尔活性,具有优异的选择性指数和有利的分子特性,因此有望成为治疗南美锥虫病和昏睡病的热门药物。
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
1,2-Addition of Phenylacetylene to Aldimines Catalyzed by InCl3/CuCl in Water under Barbier Conditions
作者:Dipak Prajapati、Rupam Sarma、Debajyoti Bhuyan、Wenhao Hu
DOI:10.1055/s-0030-1259679
日期:2011.3
A new and efficient method for the preparation of various propargylamines has been achieved by the simple Barbier-Grignard-type reaction of phenylacetylene with a variety of aldimines under aqueous conditions, catalyzed by a bimetallic In-Cu system.