Thermolysis and photolysis of 2-diazo-1,3-dicarbonyl compounds were investigated as a function of methanol concentration. As the methanol concentration decreased, methyl group migration increased concomitant with the suppression of O–H insertion into methanol, whereas aryl group migration was essentially unaltered with the methanol concentration. The results are interpreted as indicating that aryl
研究了 2-重氮-1,3-二羰基化合物的热解和光解与
甲醇浓度的函数关系。随着
甲醇浓度的降低,甲基迁移随着 O-H 插入
甲醇的抑制而增加,而芳基迁移基本上不随
甲醇浓度而改变。结果被解释为表明芳基迁移直接从重氮化合物的激发态发生,但甲基迁移发生在单线态卡宾中,与 O-H 插入竞争。