M. Chanda et al., Solid-state photolysis of sterically congested cis-1,2-dibenzoylalkenes: isolation and characterization of vinylketenes, CHEM COMMUN, (6), 2001, pp. 543-544
Hitherto non-isolable vinylketenes from the solid state photolysis of cis-1
,2-dibenzoylalkene compounds have been isolated and characterized and their
stabilities were found to be enhanced with the extent of steric congestion
in the molecules.