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Photochemistry of 4-Thia-2-cycloalkenones. Part 2

✍ Scribed by Elke Anklam; Sabine Lau; Paul Margaretha

Publisher
John Wiley and Sons
Year
1985
Tongue
German
Weight
205 KB
Volume
68
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Methyl 2‐allyl‐3‐oxo‐2,3‐dihydrothiophene‐2‐carboxylate (2) photocyclizes selectively to methyl 2‐oxo‐7‐thiatricyclo[3.2.1.0^3,6^]octane‐1‐carboxylate (4). In contrast, 4‐thia‐2‐cyclohexenone 3, on irradiation, affords only low yields of dimers, cycloadducts (2‐methylpropene) or RH reduction products (i‐ProH).

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