Process for producing dihydronaphthalene derivatives
US4418218A · kind A · utility
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3Claims
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Key dates
| Filing date | Mar 29, 1982 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Mar 29, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F5/069
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2-(1'-hydroxy)ethyl-5,8-dimethoxy-3,4-dihydronaphthalene of the formula ##STR1## is produced by reducing 2-acetyl-5,8-dimethoxy-3,4-dihydronaphthalene of the formula, ##STR2## with a reducing agent obtained by reacting one equivalent of lithium aluminum hydride with one equivalent of an optically active N-substituted ephedrine of the formula, ##STR3## (wherein R.sub.1 is a C.sub.1 -C.sub.4 alkyl group or benzyl group, and Ph is phenyl group) and two equivalents of an N-substituted aniline of the formula, ##STR4## (wherein R.sub.2 is a C.sub.1 -C.sub.4 alkyl group or phenyl group, and Ph is phenyl group).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.