Photochemical cycloadditions of triplet 1,3-dimethyluracil to olefins. Structural studies on the adducts
✍ Scribed by Swenton, John S.; Hyatt, John A.; Lisy, James M.; Clardy, Jon
- Book ID
- 126860479
- Publisher
- American Chemical Society
- Year
- 1974
- Tongue
- English
- Weight
- 946 KB
- Volume
- 96
- Category
- Article
- ISSN
- 0002-7863
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The present study of the photochemical cycloaddltlon o? enol acetates of cyclic 1,2-dlketones to l,l-dlethoxyethylene has been InItIated with the hope of applioatlon to the synthesis 2 of some sesquiterpenes, I.e. Illudol etc.3. There Is little known concerning the stereoeelectIvIty and orlentatlona
## Abstract Addition of 9,10‐phenanthrenequinone or 3,5‐di‐__tert__‐butyl‐__o__‐benzoquinone to __N,N__‐dialkyl‐3‐alken‐1‐ynyl‐1‐amines R^2^‐CHCH‐C≡C‐NR^1^~2~ (**4**) gives quinoid α‐alkenyl‐γ‐oxo‐α,β‐unsaturated carboxamides **6** or **8**, respectively; these undergo a spontaneous ring‐closure,