Issue 5, 2019

Regioselective photoreactions within a series of mixed co-crystals containing isosteric dihalogenated resorcinols with 4-stilbazole

Abstract

The formation and photoreactivity of a series of mixed co-crystals containing 4-stilbazole along with both 4,6-dichlororesorcinol and 4,6-dibromoresorcinol at various ratios is reported. In all cases, the quantitative [2 + 2] cycloaddition reaction yields an identical head-to-tail photoproduct, namely rctt-1,3-bis(4-pyridyl)-2,4-bis(phenyl)cyclobutane. The selectivity in the cycloaddition reaction occurred due to a shorter distance observed between two carbon–carbon double bonds that were found between and not within the hydrogen-bonded assemblies.

Graphical abstract: Regioselective photoreactions within a series of mixed co-crystals containing isosteric dihalogenated resorcinols with 4-stilbazole

Supplementary files

Article information

Article type
Communication
Submitted
02 Jan 2019
Accepted
27 Feb 2019
First published
28 Feb 2019

Photochem. Photobiol. Sci., 2019,18, 989-992

Regioselective photoreactions within a series of mixed co-crystals containing isosteric dihalogenated resorcinols with 4-stilbazole

A. L. Grobelny, N. P. Rath and R. H. Groeneman, Photochem. Photobiol. Sci., 2019, 18, 989 DOI: 10.1039/C9PP00004F

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