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Photoaddition of Acetylcyclohexane and Ethanol
Author(s) -
Rubin M. B.
Publication year - 1969
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.196900008
Subject(s) - chemistry , photochemistry , adduct , hydrogen atom abstraction , intramolecular force , ethanol , ketone , hydrogen atom , derivative (finance) , hydrogen , medicinal chemistry , stereochemistry , organic chemistry , financial economics , economics , alkyl
1‐Acetylcyclohexene undergoes photoaddition with ethanol to give, initially, cis‐ and trans‐2‐ethoxy‐1‐acetylcyclohexane. The thermodynamically less stable cis isomer is the major product. No products resulting from photochemical hydrogen atom abstraction from ethanol by photoexcited ketone were observed in contrast to the results obtained with an acetylcyclopentene derivative. The initially formed adducts undergo a further photochemical reaction, intramolecular hydrogen atom abstraction, to give derivatives of octahydrobenzofuran. Quantum yields for disappearance of acetylcyclohexene in ethanol were 0.04 at 2537Å and 0.25 at 3130Å.