Cyanophosphates (CPs) can easily be prepared via the reactions of carbonyl compounds with diethyl phosphorocyanidate (DEPC) in the presence of LiCN (cat.) under non-aqueous conditions. Treatment of ketone-derived CPs with TMSN₃/Bu₂SnO (cat.) in toluene at reflux produces cyclopentenes or heterocyclic products in good yields under neutral conditions. In this two-step transformation, CPs may form tetrazolylphosphates, which subsequently undergo successive fragmentation to generate alkylidene carbenes, which undergo [1,5]-C–H insertions to yield five membered compounds.

中文翻译：

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在中性条件下通过氰基磷酸酯从酮合成五元不饱和化合物：四唑裂解生成的亚烷基卡宾[1,5] -CH插入

在非水条件下，在LiCN（cat。）存在下，羰基化合物与磷腈二乙酯（DEPC）的反应可轻松制得氰基磷酸盐（CPs）。在中性条件下，用甲苯中的TMSN ₃ / Bu ₂ SnO（cat。）在甲苯中处理酮衍生的CP，可以高产率生产环戊烯或杂环产物。在此两步转化过程中，CP可能形成四唑基磷酸酯，随后对其进行连续裂解以生成亚烷基卡宾，这些卡宾经过[1,5] -CH插入可生成五元化合物。