Stereochemistry of hydroboration of methylenecyclohexanes
โ Scribed by Klein, Joseph.; Lichtenberg, D.
- Book ID
- 126834029
- Publisher
- American Chemical Society
- Year
- 1970
- Tongue
- English
- Weight
- 438 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0022-3263
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
Substituted alkyhnethylenecyclohexanes were hydrogenated over several transition metal catalysts. The ratios of the epimeric products were almost unity over freshly prepared Raney Ni but the axial Me counterparts were favoured over aged catalyst. The axial Me products were also preferred on Pt or Rh
The hydroboration of allylsilanes is highly stereoselective in the sense (3 -t 4 and 6 + .I), especially with 9-BBN as the hydroborating reagent. The products can be converted stereospecifically into 1,3-diol derivatives (5 and 6). Allylsilanes usually react with electrophiles in the stereochemica