N′,N′-dialkylhydrazides and their protonated forms: ab initio calculations and studies by physical methods
摘要:
RHF/6-31G(d) and MP2/6-31G(d) quantum-chemical calculations of N', N'-dimethylethanohydrazide molecule and also MP2/6-31G(d) calculations of its protonated forms were performed. With the use of IR and H-1 NMR spectroscopy the series of N',N'-dialkylhydrazides and their salts with HCl and H2SO4 were studied. The position of proton addition was determined. The experimental results were compared with the calculated findings.
In the presence of tert-butylnitrite and dioxygen, the C-N bond activation of N,N'-dialkylacylhydrazines was realized, providing a series of N-nitrosoacylhydrazines in high yields. Different from transition-metal and other radical catalysis, this reaction is mediated by a nitrogen-centered radical of the corresponding N,N'-dialkylacylhydrazine and further beta-fragmentation, which was supported by the mechanistic study.
N′,N′-dialkylhydrazides and their protonated forms: ab initio calculations and studies by physical methods
作者:V. Yu. Gusev、T. D. Batueva、V. P. Feshin、T. Yu. Nasrtdinova、A. V. Radushev、O. A. Maiorova、V. I. Karmanov
DOI:10.1134/s1070363209110127
日期:2009.11
RHF/6-31G(d) and MP2/6-31G(d) quantum-chemical calculations of N', N'-dimethylethanohydrazide molecule and also MP2/6-31G(d) calculations of its protonated forms were performed. With the use of IR and H-1 NMR spectroscopy the series of N',N'-dialkylhydrazides and their salts with HCl and H2SO4 were studied. The position of proton addition was determined. The experimental results were compared with the calculated findings.