Method for removing dimethoxybenzyl group
US10316026B2 · kind B2 · utility
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Key dates
| Filing date | Nov 4, 2016 |
| Grant date | Jun 11, 2019 |
| Priority date | — |
| Expiry date | Nov 4, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D277/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In a method for producing a de-dimethoxybenzylated compound by removing a dimethoxybenzyl group from a compound containing a dimethoxybenzyl group bonded to a nitrogen atom in the presence of an acid, the de-dimethoxybenzylated compound is obtained by removing the dimethoxybenzyl group without forming a poorly soluble product resulting from the removed dimethoxybenzyl group. The de-dimethoxybenzylation reaction is carried out in the presence of triphenylphosphine or diethylthiourea.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.