Stereoselective epoxidation of 2-arylidene-1-indanones and 2-arylidene-1-benzosuberones
✍ Scribed by W. Adam; J. Halász; Z. Jámbor; A. Lévai; C. Nemes; T. Patonay; G. Tóth
- Book ID
- 104953883
- Publisher
- Springer Vienna
- Year
- 1996
- Tongue
- English
- Weight
- 508 KB
- Volume
- 127
- Category
- Article
- ISSN
- 0026-9247
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📜 SIMILAR VOLUMES
The relative configuration and stereochemistry of spiroepoxides prepared by dimethyldioxirane, alkaline hydrogen peroxide and m-chloroperoxybenzoic acid and of dione by-products were elucidated by various 'H and 13C NMR methods.
## Abstract 1,3‐Dipolar cycloaddition of __E__‐2‐arylidene‐1‐indanones 1a‐h and Z‐aurones 3a‐c with diazomethane provided __trans__‐spiro‐1‐pyrazolines 2a‐h and 4a‐c, respectively, as sole products. However, the same cycloaddition of Z‐1‐thioaurones 5a‐f afforded a mixture of Z‐α‐methyl‐1‐thioauron