Novel synthesis of 1,4,5-trisubstituted 1,2,3-triazoles via a one-pot three-component reaction of boronic acids, azide, and active methylene ketones
作者:Jian Zhang、Guanyi Jin、Senhan Xiao、Jingjing Wu、Song Cao
DOI:10.1016/j.tet.2012.12.086
日期:2013.3
A series of 1-aryl-5-trifluoromethyl (or difluoromethyl)–1,4,5-trisubstituted 1,2,3-triazoles were synthesized in high yield by a novel one-potthree-component reaction of arylboronic acids, sodium azide, and active methylene ketones, such as ethyl 4,4-difluoroacetoacetate or ethyl 4,4,4-trifluoroacetoacetate in the presence of Cu(OAc)2 and piperidine using a DMSO/H2O (10/1) mixture as solvent.
[EN] NOVEL OXABOROLE ANALOGS AND USES THEREOF<br/>[FR] NOUVEAUX ANALOGUES D'OXABOROLE ET UTILISATIONS DE CES DERNIERS
申请人:ANACOR PHARMACEUTICALS INC
公开号:WO2018160845A1
公开(公告)日:2018-09-07
This application describes compounds, compositions, and methods which are useful in treating, preventing, inhibiting, ameliorating, or eradicating the pathology and/or symptomology of a disease caused by a parasite.
Organocatalytic Enamide–Azide Cycloaddition Reactions: Regiospecific Synthesis of 1,4,5‐Trisubstituted‐1,2,3‐Triazoles
作者:Lee Jin Tu Danence、Yaojun Gao、Maoguo Li、Yuan Huang、Jian Wang
DOI:10.1002/chem.201002775
日期:2011.3.21
Heterocycles in one click: A novel organocatalytic enamide–azide cycloadditionreaction has been developed. This synthetic procedure represents a new method for the efficient construction of 1,4,5‐trisubstituted‐1,2,3‐triazoles under mild reaction conditions. Most significantly, the investigated process is highly regiospecific (see scheme).
Photochemical C-H Activation: Generation of Indole and Carbazole Libraries, and First Total Synthesis of Clausenawalline D
作者:Isak Alimi、Richard Remy、Christian G. Bochet
DOI:10.1002/ejoc.201700300
日期:2017.6.16
N-arylbenzotriazoles leads respectively to indoles and carbazoles. Because the very rapid access to libraries of triazoles, for example by the copper-catalyzed [3+2] cycloaddition between alkynes and azides, this reaction allows the preparation of indoles in a single operation, by the simultaneous photolysis of the precursor library. As an example of such a synthesis of carbazoles, we prepared for the first
Efficient Synthesis of 5-Fluoroalkylated 1<i>H</i>-1,2,3-Triazoles and Application of the Bromodifluoromethylated Triazole to Prepare New<i>gem</i>-Difluorinated Triazole Compounds
作者:Shizheng Zhu、Weimin Peng
DOI:10.1055/s-2003-36784
日期:——
A series of 5-fluoroalkylated 1H-1,2,3-triazoles was prepared in good yield by the regiospecific 1,3-dipolar cycloaddition reaction of the (Z) ethyl 3-fluoroalkyl-3-pyrrolidino-acrylates with aryl or benzyl azides. In the cases of benzyl azides, addition of Na2CO3 was crucial for a high yield of the triazoles. The tetrakis(dimethylamino)ethylene (TDAE) promoted reaction of the bromo-difluoromethylated 1H-1,2,3-triazole with aldehyde afforded a new class of novel gem-difluorinated triazole compounds.