Reaction of<i>N</i>-[(α-acetoxy)-4-pyridylmethyl]-3,5-dimethylbenzamide with alkyl isocyanates
作者:Miguel F. Braña、José M. Castellano、Rosa Donoso、María L. López Rodríguez、María J. R. Yunta、Nigel P. C. Walker
DOI:10.1002/jhet.5570270254
日期:1990.2
Reaction of N-(α-acetoxy)4-pyridylmethyl]-3,5-dimethylbenzamide 3 with methyl and ethyl isocyanates afforded 1,3-dimethyl and 1,3-diethyl-4-(3,5-dimethylbenzoylamino)-2-oxoimidazolidine-5-spiro-4′-[1′,4′-dihydro-1′-acetyl]pyridine 6a,b, respectively. However, the reaction of 3 with isopropyl, t-butyl and phenyl isocyanates gave the corresponding N,N′-diurea and the dimerization compound 8. The structure
的反应ñ - (α -乙酰氧基)-4-吡啶基甲基] -3,5-二甲基苯甲酰胺3甲基和乙基的异氰酸酯,得到1,3-二甲基和1,3-二乙基-4-(3,5- dimethylbenzoylamino)-2-氧代咪唑烷-5-螺-4'-[1',4'-二氢-1'-乙酰基]吡啶6a,b。但是,3与异丙基,叔丁基和异氰酸苯酯的反应给出了相应的N,N'-二脲和二聚化合物8。通过晶体X射线衍射分析确认了6a的结构。