1,3-Dipolar cycloaddition of 2-benzylideneindan-1,3-dione α-oxide to olefins
✍ Scribed by M. Yu. Krysin; I. K. Anokhina; L. P. Zalukaev
- Publisher
- Springer US
- Year
- 1987
- Tongue
- English
- Weight
- 331 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0009-3122
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## Abstract The __Bredt__ olefins bicyclo [3.3.1]non‐1‐ene **(2)**, bicyclo [4.2.1]non‐1 (8)‐ene **(3)**, and bicyclo [4.2.1]non‐1 (2)‐ene **(4)** react rapidly with 1,3‐dipoles such as diazomethane, phenyl azide, and mesitonitrile oxide to yield mixtures of two regioisomeric cycloadducts **10, 11*
## Abstract The 1,3‐dipolar cycloaddition reactions of 2‐diazocyclohexane‐1,3‐dione (**7a**; __Table 1__) and of alkyl diazopyruvates (**11a**–**e**; __Table 3__) to 2,3‐dihydrofuran and other enol ethers have been investigated in the presence of chiral transition metal catalysts. With Rh^II^ catal