5‐Isopropyliden‐1,2‐oxathiole 2‐Oxide by Photoisomerization of 2,2‐Dimethyl‐3(2 H )‐thiophenone 1‐Oxide | Zendy

Kowalewski Ronald | Zendy; Margaretha Paul | Zendy

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5‐Isopropyliden‐1,2‐oxathiole 2‐Oxide by Photoisomerization of 2,2‐Dimethyl‐3(2 H )‐thiophenone 1‐Oxide

Author(s) -

Kowalewski Ronald,

Margaretha Paul

Publication year - 1988

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.198813741

Subject(s) - photoisomerization , diradical , chemistry , oxide , photochemistry , isomerization , irradiation , medicinal chemistry , organic chemistry , catalysis , nuclear physics , singlet state , excited state , physics

The cyclic s‐trans ‐1,3‐dienes 3 are novel, highly promising synthetic intermediates . They may be obtained easily and selectively from the cyclic ketovinyl sulfoxides 2 . This photoreaction is surprising, for the compounds 1 react completely differently upon irradiation. The photoisomerization of 2 presumably occurs via the diradical 4 as intermediate.

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