Accession Number:

AD0617927

Title:

THE PHOTOCHEMICAL PRODUCTION OF STRAINED RINGS.

Descriptive Note:

Final rept.,

Corporate Author:

UNIVERSITY OF WESTERN ONTARIO LONDON DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1965-05-03

Pagination or Media Count:

9.0

Abstract:

The object of the research was the photochemical synthesis of rings. It was found that intermolecular cycloaddition, a previously unknown phenomenon outside dimerization, could be induced photochemically. Whilst simple unsaturated ketones appeared unreactive the hydrogen bonded cyclic ketone acetyl acetone could be induced to participate. Further, this diketone had the advantage that any hydrogen abstraction would give a diradical which would be immediately converted, by spin inversion, into the starting material. Two other unrelated photochemical studies are also reported 1 the photosensitized oxidation of pyrrole, providing the structure of the product maleimide and the mechanism of oxidation and 2 the dimerization of alpha-pyridones and sultones as a means of building cyclic systems.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE