Vakuum UV Photolyses of Some Bichromophoric Alkenes Possesing Hydroxyl or Methoxycarbonyl Group

Article abstract of DOI:10.1246/bcsj.58.2217

The direct photolyses at 185 nm of some naturally occuring and related bichromophoric alkenes possesing hydroxyl or methoxycarbonyl group at an allylic, homoallylic, or remote position gave the geometrical isomers as the major photoproducts detectable on gas chromatography.The isomerization yield was highly sensitive to the functional group introduced and its position; allylic alkenols gave poor yields, while both functionalization at a remote position and esterification of the hydroxyl group improve the photoisomerization yield.