R. Guilet et al., IMPROVEMENTS IN PROCEDURES OF A BICYCLIC LACTONE SYNTHESIS - 1-PHENYL-2-OXO-3-OXA BICYCLO [3 1/0] HEXANE/, Comptes rendus de l'Academie des sciences. Serie IIc, Chimie, 1(10), 1998, pp. 651-660
The above bicyclic lactone can be synthesized by phase transfer cataly
sis or in DMSO under ultrasonic activation. Alkylation with epihalohyd
rines of anionic species generated from phenylacetonitrile or alkyl ph
enylacetate is followed by possible hydrolysis and further cyclization
in acidic medium. (C) Academie des sciences/Elsevier, Paris.