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

The halogen atoms in the 1‐chloro‐1 H ‐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 1 H ‐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 .