[2 + 3]-Cycloadditions of Diazoalkanes with Imines of Hexafluoroacetone and Chloral.
✍ Scribed by G. Mloston; A. Bodzioch; Z. Cebulska; A. Linden; H. Hiemgartner
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 20 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The 2‐methylenecephalosporins 1 undergo stereoselective 1,3‐dipolar cycloaddition reactions with diazoalkanes to give exclusively the spirocyclopropylcephalosporins 3. Substituens at C‐3, C‐4 and C‐7 of the cephalosporin nucleus do not display a significant effect on the reactivity of t
## Abstract Bipyrazolidin‐3‐one derivatives are biologically significant compounds and their importance has increased in the past decades. In this paper, the first stereoselective [3 + 2] dipolar cycloadditions of azomethine imines with α,β‐unsaturated aldehydes catalyzed by readily available α,α‐d