Bt. Kim et al., EXOCYCLIZATION OF NOVEL BETA,BETA-DIFLUORO-ALPHA-PHENYLVINYL SULFIDE WITH BIDENDATE HETEROATOM (N, O, S) NUCLEOPHILES, Heterocycles, 41(4), 1995, pp. 641-646
The exocyclization of novel beta,beta-difluoro-alpha-phenylvinyl sulfi
de with bidentate heteroatom (N, O, S) nucleophiles afforded various t
ypes of heterocyclic ketene acetals (O,O-, O,S-, S,S-, N,N-, N,O-, N,S
-). The ease of exocyclization depended on the I ring size of heterocy
clic ketene acetals.