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Photochemical synthesis of pyrrole derivatives by desulfurization of 2,5-dihydro-1H-pyrrole-2-thiones and [2 + 2] cycloaddition of 2,5-dihydro-1H-pyrrole-2-thiones with alkenes

✍ Scribed by Nishio, Takehiko

Book ID: 118027284
Publisher: Royal Society of Chemistry
Year: 1997
Weight: 319 KB
Volume: 6
Category: Article
ISSN: 1472-7781
DOI: 10.1039/a606211c

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## Abstract On irradiation (254 nm), the newly synthesized Boc‐protected 5‐alkenyl‐2,5‐dihydro‐1__H__‐pyrrol‐2‐ones **13** undergo regioselective intramolecular [2+2] photocycloadditions. While the allyl derivatives **13a**–**13c** afford mainly azatricyclo[3.3.0.0^2,7^]octanones, __i.e., crossed__