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Photochemical behavior of acyclic 1,3 dienes: mechanistic implications of 1,5-hydrogen shifts in the S1 state

✍ Scribed by D. Rondelez; S. Boué

Publisher
Elsevier Science
Year
1976
Weight
160 KB
Volume
5
Category
Article
ISSN
0047-2670

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Irradiation of allene-enoate 1 affords alkyne 3 as the major photoproduct. Selectively deuterated analog d-I affords a single diastereomer on inadiation. This result .~bim~/ical a sl~pwise mechanism for enantioselective [2+2]-photocycloadditioas involving a 1,4intermediate 2 which collapses to prod