derivatives is reported; this provides a general method for the synthesis of several new annulated and fused heterocyclic systems. The unexpected cycloaddition of diazomethane (CH2N2) to the C-5,6 double bond of 5-nitrouracil and 5-nitrouridine derivatives is also reported.
报道了三甲基硅烷基重氮甲烷锂[TMS(Li)N 2 ]与尿嘧啶和尿苷衍生物的反应。这为几种新的环状和稠合杂环系统的合成提供了一种通用方法。还报道了重氮甲烷(CH 2 N 2)与5-硝基尿嘧啶和5-硝基尿苷衍生物的C-5,6双键发生意外的环加成反应。