Chelate-controlled diastereoselective hydrogenation with heterogeneous catalyst
US10000460B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Mar 27, 2017 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Mar 27, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/58
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A hydrogenation catalyst, preferably palladium on a support, preferably alumina or activated charcoal support, is used in the presence of lithium salts, with salts such as the borates being preferred. This provides hydrogenation of precursors to give rise to a stereoselective, such as diastereoselective bias in the product of alkene hydrogenation using the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.