Metal‐Free Synthesis of Functional 1‐Substituted‐1,2,3‐Triazoles from Ethenesulfonyl Fluoride and Organic Azides
作者:Marie‐Claire Giel、Christopher J. Smedley、Emily R. R. Mackie、Taijie Guo、Jiajia Dong、Tatiana P. Soares da Costa、John E. Moses
DOI:10.1002/anie.201912728
日期:2020.1.13
scalable click-inspired protocol for the synthesis of 1-substituted-1,2,3-triazoles from organicazides and the bench stable acetylene surrogate ethenesulfonyl fluoride (ESF). The new transformation tolerates a wide selection of substrates and proceeds smoothly under metal-free conditions to give the products in excellent yield. Under controlled acidic conditions, the 1-substituted-1,2,3-triazole products
[4 + 1] Annulation of in situ generated azoalkenes with amines: A powerful approach to access 1-substituted 1,2,3-triazoles
作者:Hongwei Wang、Yongquan Ning、Paramasivam Sivaguru、Giuseppe Zanoni、Xihe Bi
DOI:10.1016/j.cclet.2021.09.008
日期:2022.3
methods for their preparation mainly rely on thermal [3 + 2] cycloaddition of potentially dangerous acetylene and azides. Here we report a base-mediated [4 + 1] annulation of azoalkenes generated in situ from readily available difluoroacetaldehyde N-tosylhydrazones (DFHZ-Ts) with amines under relatively mild conditions. This azide- and acetylene-free strategy provides facile access to diverse 1-substituted
Method for producing 1-substituted-1,2,3- triazole derivative
申请人:——
公开号:US20030069419A1
公开(公告)日:2003-04-10
A method for producing a compound of the formula:
1
(1) in a secondary or tertiary alcohol in the presence of a base, or
(2) in the absence of a base is provided. According to this method, a 1-substituted-1,2,3-triazole compound having a tyrosine kinase inhibitory action can be produced efficiently in a high yield at an industrial large scale by a convenient method
The present invention relates to substituted 1-2-[2-halo-4-(4-halogen-phenoxy)- phenyl]-2-ethoxy-ethyl}-1 H-[1,2, 4]triazole compounds of formula (I) as defined in the description, and the N-oxides, and salts thereof, processes and intermediates for preparing these compounds and also to compositions comprising at least one such compound. The invention also relates to the use of such compounds and compositions for combating harmful fungi and seed coated with at least one such compound.
A series of novel bis(NHC) Cu(i) catalysts enables the production of triazoles with different substitution patterns and bioconjugation via “click” chemistry under homogeneous and/or heterogeneous catalytic conditions in aqueous media.