Second generation dötz benzannulation reactions in organic synthesis
✍ Scribed by James E. Painter; Peter Quayle; Prakash Patel
- Book ID
- 103408818
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- French
- Weight
- 294 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
The facile melallation of 2-chloroglucal derivatives 8 and ! ! affords ready access to the corresponding Fischer catbene complexes 1 0 and 1 3. Carbene complexes i 0 and 13 undergo ben,~anulation reactions with acetylenes to previde functionalised benzopyrans in moderate overall yields.
## Abstract We have carried out a theoretical investigation of the Dötz reaction between acetylene and a series of chromium Fischer‐type carbenes [(CO)~5~CrC(X)R] with different representative substituents (R=CHCH~2~, Ph) and heteroatom ligands (X=OH, NH~2~, OCH~3~, N(CH~3~)~2~) by using density