Ck. Mcclure et al., Investigations of the reaction of pentacovalent oxaphosphlenes with isocyanates. Synthetic and mechanistic aspects, PHOSPHOR SU, 146, 1999, pp. 709-712
Citations number
4
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
The reaction of the pentacovalent oxaphospholene 1 with isocyanates to prod
uce the heterocycle 2 was followed by NMR in order to delineate the mechani
sm. The addition of 1 and 2 eq. of an isocyanate to 1 indicated very fast f
ormation of 2 long-lived species that slowly rearranged to product. Cross-o
ver experiments using 2 different isocyanates indicated the very fast forma
tion of a statistical mixture of all 4 products 4-7, Kinetic analysis of th
e data was performed.