Process for the preparation of cyclic sulphates
US4924007A · kind A · utility
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6Claims
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Key dates
| Filing date | May 15, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | May 15, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D327/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Cyclic sulphates of formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6, which are identical or different, each denote hydrogen, halogen, alkyl, alkoxy, aryloxy or alkoxycarbonyl and n is 0 or 1, are prepared by rapid reaction, at a temperature of 150.degree. to 250.degree. C., of concentrated sulphuric acid with a glycol of formula ##STR2##
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