Observations on the ring opening reactions of 2-methyleneaziridines with acid chlorides and alkyl chloroformates
作者:David S. Ennis、Julie Ince、Sabitur Rahman、Michael Shipman
DOI:10.1039/b002223n
日期:——
of 1-alkyl-2-methyleneaziridines react with alkylchloroformates (MeO2CCl, PhCH2O2CCl) or acid chlorides (AcCl, p-NO2C6H4COCl) at room temperature in nonpolar solvents (CH2Cl2, THF, toluene) to produce ring opened enamide products in moderate to good yields. Mechanistic studies using 3-deuterio-N-(1-phenylethyl)-2-methyleneaziridine suggest the reactions proceed by initial N-acylation to form the corresponding
多种1-烷基-2-亚甲基氮丙啶在室温下与烷基氯甲酸酯(MeO 2 CCl,PhCH 2 O 2 CCl)或酰氯(AcCl,p -NO 2 C 6 H 4 COCl)反应溶剂(CH 2 Cl 2,THF,甲苯)产生开环 烯酰胺产品产量中等至良好。机械研究使用3-氘-N-(1-苯乙基)-2-亚甲基氮丙啶 建议反应首先进行 N-酰化 形成相应的叠氮基 阳离子(例如27),随后在sp 3杂交时通过氯离子进行区域特异性开环氮丙啶 碳原子产生观察到的产物。