Mr. Selim et al., HEXACHLORODIARYLCYCLODIPHOSPHAZANES IN HETEROCYCLIC SYNTHESIS - NAPHTHOPYRANYLCYCLODIPHOSPHAZANES AND RELATED-COMPOUNDS, Indian Journal of Heterocyclic Chemistry, 6(2), 1996, pp. 95-98
Interaction of 2-acetylbenzo (2,1-b) pyran-3-one (1) 1,2-acetylnaphtho
(2,1-b) pyran-3-one (6) and 2-acetyl-9-chloronaphtho (1,2-b) pyran-3-
one (8) with 1,3-diarylhexachlorocyclodiphosphazanes (2a-g) gave the c
orresponding carbonylmethylene compounds 3a-d, 7d,g, 9 and 10 and oxoe
thyl 4e, f derivatives respectively.