Photocycloadditions of aromatic thiones to allenes
✍ Scribed by H.J.T. Bos; H. Schinkel; Th.C.M. Wijsman
- Book ID
- 104248223
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- French
- Weight
- 97 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
## Abstract The photocycloaddition of benzothiazole‐2‐thiones to electron‐rich and aryl‐substituted alkenes are described. Irradiation of __N__‐unsubstituted benzothiazole‐2‐thione (1) in the presence of alkenes 3 gave 2‐(2′‐mercaptoalkyl)benzothiazoles 4, and 2‐substituted benzothiazoles 5 and 6 (
## Abstract The (2 + 2)‐ and (4 + 2)‐cycloaddition of triplet xanthenethione to phenyl‐, methoxy‐tert‐butoxy‐, (methylthio)‐, (tert‐butylthio)‐ and 1,1‐dimethyl‐allene gives rise to thietanes 3 and 4, and to thiopyran derivative 5, respectively. The mechanism of the reaction is discussed. In the ca
A synthetically useful C-C bond formation involving the photochemical addition of quinoxaline-2( 1 H )thiones to alkenes is described. Irradiation of the quinoxaline-2(1H)-thiones 1 4 in the presence of the alkenes 7 gave the 2-(2'-mercaptoalkyl)quinoxalines 8 1 1 in moderate-to-good yields via ring
## Abstract The photochemical reactions of indane‐1‐thiones 4 were examined. Irradiation of indane‐1‐thiones 4c–d bearing δ‐hydrogen atoms in the side chain gave cyclic thiol derivatives 5c–d via δ‐hydrogen atom abstraction by the excited thiocarbonyl sulfur. Irradiation of 2‐allylindane‐1‐thiones