High temperature radical cyclization anomalies in the tandem enediyne-bis-radical cyclization
✍ Scribed by Janet Wisniewski Grissom; Trevor L. Calkins; Dahai Huang; Heidi McMillen
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- French
- Weight
- 1024 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0040-4020
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📜 SIMILAR VOLUMES
Carbohydrates possessing a suitably positioned hydroql group in the presence of organoselenim ttagmts and iodine under an argon atmosphere un&rgo intramolecuku ~fagmetum~on-cydimtion mmion to give aldofnranose and aMopyrawse~nns of carbohydrates, spec@cdly.
## Abstract The 4‐substituted 1‐phenyl‐1‐butene‐3‐ynes 1a–c and the 2‐ethynylstyrenes 7a–c were subjected to high‐temperature pyrolysis. The cycloisomerization products isolated suggest that these are formed by three competing processes: by (i) an electrocyclic or a molecule‐induced, (ii) an alkeny