Synthesis of heterocyclic compounds by the reactions of exocyclic α,β-unsaturated ketones
✍ Scribed by Albert Lévai
- Publisher
- Journal of Heterocyclic Chemistry
- Year
- 2004
- Tongue
- English
- Weight
- 526 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0022-152X
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## Bromination 7.11~ dibrtimidcs 7-12 haw bccn synthesized by addition of bromint to exocyclic ell-unsaturated ketones 1-6. The rclative configurations and the swcocliemistry of the products have been dctermined by N M K methods. Bromination ol3-hcnzylideneflilwnonc (3) and its thio analogue 5 pro
## Abstract 1,3‐Dipolar cycloadditions of exocyclic α,β‐unsaturated ketones 1‐22 with diazomethane afforded spiro‐1‐pyrazolines 23‐44 in a diastereospecific reaction. The structure and stereochemistry of each compound synthesised has been elucidated by nmr spectroscopic measurements and other analy
C CH 2 Ar Cl CF 3 (CF 2 ) n •, O 2 Perfluoroalkylated Heterocyclic Compounds NuH, Na 2 CO 3 3: Nu= OMe ether C CH 2 Ph Cl 1) CF 3 (CF 2 ) 5 I, (Bu 3 Sn) 2 , hν, O 2 , benzene 2) Et 3 N, Na 2 CO 3 , ether C C