The thermal decomposition of dimethyl 1-diazo-2-oxo-(2-N,N-disubstituted aminophenyl)ethylpnosphonates 1 gave rise to 2-oxoindolinium enolates 3 resulting from a Wolff rearrangement followed by an attack of the nitrogen atom on the intermediate ketene moiety. Ammonium ylides 5 resulting from the decomposition of 1 were also formed through a carbene path. The thermal decomposition of dimethyl 1-diazo-2-oxo-(2-(N
1-二重氮-2-氧代-(2-N,N-二取代的氨基苯基)乙基苯磺酸二甲酯的热分解产生2-氧代吲哚鎓烯醇酸酯3,这是由于Wolff重排,随后氮原子攻击中间烯酮而产生的部分。还通过卡宾路径形成了由1分解得到的铵化铵5。二甲基1-重氮-2-氧代-(2-(N,N-二取代氨基甲基)苯基)乙基膦酸酯6的热分解过程不同,并通过Wolff重排提供了1 H -2-苯并吡喃9作为唯一的分离产物— [1,5] H平移—闭环顺序。通过X射线晶体学确认3a和5a的结构。