[3+1+1] type cyclization of ClCF<sub>2</sub>COONa for the assembly of imidazoles and tetrazoles <i>via in situ</i> generated isocyanides
作者:Ya Wang、Yao Zhou、Qiuling Song
DOI:10.1039/d0cc01919d
日期:——
A facile synthesis of imidazoles and tetrazoles via [3+1+1] type cyclization of ClCF2COONa is developed. A diverse array of imidazoles and tetrazoles were obtained in decent yields via isocyanide intermediates. Notably, this is the first example of the cycloaddition of in situ generated isocyanides.
Building Heterocyclic Systems with RC(OR)2+ Carbocations in Recyclable Brønsted Acidic Ionic Liquids: Facile Synthesis of 1-Substituted 1H-1,2,3,4-Tetrazoles, Benzazoles and Other Ring Systems with CH(OEt)3 and EtC(OEt)3 in [EtNH3][NO3] and [PMIM(SO3H)][O
作者:Gopalakrishnan Aridoss、Kenneth K. Laali
DOI:10.1002/ejoc.201100128
日期:2011.5
IL-1/CH(OEt) 3 . The latter was also formed from 2-aminobenzoic acid in IL-1/CH(OEt) 3 . Mechanistic implications are addressed. The reported protocols enable rapid assembly of a host of heterocyclic systems in high yields with the added advantage of recycling and reuse of the ILs.
A compound for use in the treatment of a disease ameliorated by the inhibition of Notum of formula (I): (I)
一种用于治疗通过抑制公式(I)中的Notum改善的疾病的化合物:(I)
Oxidation/ MCR domino protocol for direct transformation of methyl benzene, alcohol, and nitro compounds to the corresponding tetrazole using a three-functional redox catalytic system bearing TEMPO/Co(III)-porphyrin/ Ni(II) complex
作者:Boshra Mahmoudi、Amin Rostami、Milad Kazemnejadi、Baram Ahmed Hamah-Ameen
DOI:10.1016/j.mcat.2020.111311
日期:2021.1
immobilized on magneticnanoparticles. The presence of three functional groups including TEMPO, coordinated cobalt, and coordinated nickel in the catalyst, allowed the oxidation of various types of alcohols, alkyl benzenes as well as the reduction of nitrocompounds by a single catalyst. All reactions yielded up to 97 % selectivity for oxidation and reduction reactions. Next, the ability of the catalyst to successfully
Isocyanide based multicomponent click reactions: a green and improved synthesis of 1-substituted 1<i>H</i>-1,2,3,4-tetrazoles
作者:Shrikant G. Pharande、Manuel A. Rentería-Gómez、Rocío Gámez-Montaño
DOI:10.1039/c8nj02312c
日期:——
An improved ultrasound assisted greensynthesis of 1-substituted 1H-1,2,3,4-tetrazoles via a novel isocyanide based multicomponent click reaction (IMCCR) under mild, solvent, catalyst and column-free conditions has been developed. This new, green and sustainable IMCCR methodology resulted in good to excellent yields (71–97%) in shorter reaction times.
开发了一种改进的超声辅助绿色合成方法,该方法在温和,无溶剂,无催化剂和无柱的条件下,通过基于异氰酸酯的新型多组分点击反应(IMCCR),实现了1取代的1 H -1,2,3,4-四唑的绿色合成。这种新的,绿色的,可持续的IMCCR方法可在较短的反应时间内获得良好至优异的收率(71–97%)。