The preparation of functionalized amines and amides using benzotriazole derivatives and organozinc reagents
摘要:
Secondary and tertiary amines 6 are conveniently prepared in good yields by reacting organozinc halides with adducts 4, which are derived from the corresponding amines, aldehydes and benzotriazole. The use of organozinc reagents enables the introduction of nitro, cyano or ester functionalities into amine mainframes. This methodology was also used to prepare functionalized amides 8. (C) 1998 Elsevier Science Ltd. AII rights reserved.
Synthesis and Biological Activities of Novel Arylazopyrazolones Substituted with Thiazolyhydrazone
作者:Purvesh J. Shah
DOI:10.5012/jkcs.2014.58.1.57
日期:2014.2.20
The 4-(1H)-benzotriazoyl methyl amino benzoate 3 was prepared by Mannich reaction of benzotriazole 1, ethyl-paminobenzoate 2 and formaldehyde. The prepared compound 3 then react with hydrazine hydrate results in the 4-(1H)-benzotriazoyl methyl amino benzoyl hydrazide 4. This compound on condensation with pre-prepared different ethyl 2-(2-(4-(4-substituted phenyl)thiazol-2-yl)hydrazono)-3-oxobutanoates 6a-d, furnished 1-(4-((1H-benzo[d] [1,2,3] triazol-1-yl)methyl amino) benzoyl)-4-(2-(4-(4-substituted phenyl)thiazol-2-yl) hydrazono)-3-methyl-1H-pyrazol-5(4H)-one 7a-d. All the compounds 7a-d was characterized by spectral studies. The compounds showed significant antimicrobial activity against various bacteria and fungi.
The preparation of functionalized amines and amides using benzotriazole derivatives and organozinc reagents
作者:Alan R. Katritzky、Sonja Strah、Sergei A. Belyakov
DOI:10.1016/s0040-4020(98)00353-6
日期:1998.6
Secondary and tertiary amines 6 are conveniently prepared in good yields by reacting organozinc halides with adducts 4, which are derived from the corresponding amines, aldehydes and benzotriazole. The use of organozinc reagents enables the introduction of nitro, cyano or ester functionalities into amine mainframes. This methodology was also used to prepare functionalized amides 8. (C) 1998 Elsevier Science Ltd. AII rights reserved.