Process for producing 1,4-benzodioxane derivatives
US6020503A · kind A · utility
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Key dates
| Filing date | Jan 11, 1999 |
| Grant date | Feb 1, 2000 |
| Priority date | — |
| Expiry date | Jan 11, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An industrial method for preparation of a 1,4-benzodioxane derivative (1), which comprises reacting a diol compound (2) with a carbonating agent to prepare a carbonate compound (3) and after removal of the protective group, cyclizing it by heating or by treating with a base or a fluoride salt. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.