Organophosphorus Compounds, 118. Reactions of 1‐Chloro‐1H‐phosphirenes with Nucleophiles

The halogen atoms in the 1-chloro-1H-phosphirenes, 5a–c, are easily substituted on reaction with organolithium and Grignard reagents, 14a–p, with formation of the corresponding O-, N-, C-, Si-, and Ge-substituted 1H-phosphirenes, 15a–t. C1/H exchange reactions also occur on reaction with lithium metal hydrides (5a 17). Furthermore, substitution reactions are also realized with the alkali metal borates, 18a–g (19a–g); the same is true for reactions with trimethylsilyl cyanide and azide (22a–d). Some of the substitution products have been characterized in the form of their metal complexes, 16, 23, 24, and 25.