2-Halogeno substituted N-cyanomethyl-N-methylbenzamides 1a-1i were investigated in a correlation analysis by ir spectroscopy to determine the conformational behavior. Compound 1h gives 4-methyl-2-methylthio-8-nitro-5-oxo-4,5-dihydro-1,4-benzothiazepine-3-carbonitrile 3 by dithiocarboxylation procedure whereas 1b was not able to react to heterocyclic seven-membered ring system.
用红外光谱法在相关分析中研究了2-卤代基取代的N-
氰甲基-N-甲基苯甲酰胺1a-1i,以确定其构象行为。化合物1h通过二
硫代羧化方法得到4-甲基-2-甲基
硫代-8-硝基-5-氧代-4,5-二氢-1,4-苯并
硫杂氮杂-3-甲腈3,而1b不能与杂环七元反应铃声系统。