Hsp. Rao et B. Bharathi, STEREOCHEMISTRY OF CIS-4,6-DIARYLTETRAHYDROPYRAN-2-ONE AND TRANS-4,6-DIARYLTETRAHYDROPYRAN-2-ONE, Proceedings of the Indian Academy of Sciences. Chemical sciences, 109(1), 1997, pp. 15-20
cis- and trans-4,6-Diaryltetrahydropyran-2-ones were synthesised from
the corresponding ketoesters. High resolution NMR spectral data reveal
that they are stabilised in half-chair conformations.