Process for the synthesis of (4R-cis)-1,1-dimethylethyl 6-iodomethyl or 6-(phenyl-substituted)sulfonyloxymethyl-2,2-dimethyl-1,3-dioxane-4-aceta te
US5248793A · kind A · utility
62Cited by
4References
2Claims
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Key dates
| Filing date | Dec 21, 1992 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Dec 21, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D319/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An improved process for the preparation of (4R-cis)-1,1-dimethylethyl 6-cyanomethyl-2,2-dimethyl-1,3-dioxane-4-acetate is described where a hydroxy ester derivative is converted in two steps to the desired product, as well as valuable intermediates used in the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.