## Abstract Chemoselective cross‐metathesis of unsaturated α‐diazo‐β‐keto esters using Grubbs’ 2^nd^ generation catalyst, followed by Rh~2~(OAc)~4~‐catalysed tandem carbonyl ylide formation‐intramolecular cycloaddition is demonstrated. The two different catalytic metallocarbene transfer reactions h
✦ LIBER ✦
Intramolecular Cycloadditions of Carbonyl Ylides
✍ Scribed by Univ.-Doz. Dr. Wolfgang Eberbach; Dipl.-Chem. Jürgen Brokatzky; Prof. Dr. Hans Fritz
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 246 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0044-8249
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Thiobenzophenone S-methylide (6) and 2,2,4,4-tetramethyl-3-thioxocyclobutanone S-methylide (17) were allowed to react with N-sulfinylaniline (7) and N-sulfinyltosylamide (8) furnishing 1,3,4-dithiazolidine 3-oxides. However, in the interaction 17 ם 8 the main product was the 1,2,4-oxadithiolane 2t