Photochemical conversion of 3H-pyrazoles to cyclopropenes and 1,2-diazabicyclo[2.1.0]pent-2-enes
✍ Scribed by Closs, Gerhard L.; Boell, Walter A.; Heyn, Hartmut.; Dev, V.
- Book ID
- 126413652
- Publisher
- American Chemical Society
- Year
- 1968
- Tongue
- English
- Weight
- 793 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0002-7863
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📜 SIMILAR VOLUMES
Photochemical reactions of conjugated cyclohexadienones and their aza analogues, e.g., 2-p@\_dones, have been extensively studied. 1) However, those of diaza snalogues, e.g., 2(lH)pyrimidin-2-ones (I),draw little attention. 2,3) As part of a series of nodel studies of nucleoside base~,~) wewere inte
## Abstract (1‐Diazo‐2‐oxoalkyl)silanes 1a–h react with cyclopropene 4 to form 2‐silyl‐2,3‐diazabicyclo[3.1.0]hex‐3‐enes 5 and/or 1‐silyll‐1,4‐dihydropyridazines 6. In most cases, a temperature‐ and solvent‐dependent equilibrium 5 ⇄ 6 maintained by an __N__ →__N__′ silyl shift exists in solution. W