## The chiral Z-azlactone derived from 1.2-0-isopropylidene-D-glyceraldehyde reacted with diazomethane to amrd stereoseiectively and diastereoselectively a cis Spiro-azlactone. Solvent and temperature &per&nce of the ratio of the producti is described e$-Didehydtoamino acid derivatives ate useful
Orientation in the 1,3-dipolar cycloaddition of diazomethane with alkylethylenes
✍ Scribed by Raymond A. Firestone
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- French
- Weight
- 211 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
Perturbational molecular orbital methods have furnished a clue to the problems of reactivity and regioselectivity in 1,34polar cycloadditions. 1 Within the framework of frontier molecular orbital theory 2 semiquantitative correlations of mte data with orbital energy sepamtions were obtained. In orde
## Abstract For Abstract see ChemInform Abstract in Full Text.
## Abstract Novel 2‐pyrazolines were obtained by the cycloaddition of diazomethane to bis(arylsulfonylethenyl)‐sulfones (**3**) and 1‐arylsulfonyl‐2‐styrylsulfonylethenes (7). Dehydrogenation of 2‐pyrazolines with chloranil gave pyrazoles.