[2 + 2] Photocycloaddition of Two Captod
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Döpp, Dietrich ;Hassan, Alaa A. ;Henkel, Gerald
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Article
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2006
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John Wiley and Sons
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English
⚖ 432 KB
## Abstract Photoexcited 3‐acetylbenzo[__b__]thiophene (1c) adds 2‐morpholinopropenenitrile (2a) in a [2 + 2] mode at the C2C3 bond regioselectively but stereounselectively with formation of cyclobuta[__b__][1]benzothiophenes 3a and 4a. In addition, the isomeric adduct 5 is formed from 2a and ex