Regioselective reactions of N-monosubstituted β-aminovinyl trifluoromethyl ketones with tosyl isocyanate
作者:Igor I Gerus、Natalie V Lyutenko、Alexey D Kacharov、Valery P Kukhar
DOI:10.1016/s0040-4039(00)01804-9
日期:2000.12
The NH and α-CH insertion reactions of tosyl isocyanate with N-monosubstituted 4-amino-1,1,1-trifluorobut-3-en-2-ones have been studied. The regioselectivity of this reaction depends on the temperature, the nature of the solvent and the catalyst: high temperatures or basic catalysts direct in favour of NH insertion while low temperatures direct the process in favour of α-CH insertion.
研究了异氰酸甲苯酯与N-单取代的4-氨基-1,1,1-三氟丁-3-烯-2-酮的NH和α-CH插入反应。该反应的区域选择性取决于温度,溶剂和催化剂的性质:高温或碱性催化剂直接引导NH的插入,而低温直接引导过程有利于α-CH的插入。