Process for the preparation of 2-amino-4-nitrobenzothiazole derivatives and intermediates
US5424439A · kind A · utility
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9Claims
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Key dates
| Filing date | Jun 13, 1994 |
| Grant date | Jun 13, 1995 |
| Priority date | — |
| Expiry date | Jun 13, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0814
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to the process for the preparation of a method for preparing derivatives of formula (I), ##STR1## wherein R is an alkyl, alkoxy, alkylthio, polyfluoroalkyl, polyfluoroalkoxy, alkenyl, phenyl, alkylsulphonyl, alkoxycarbonyl, amino, cyano, sulphonamide or dialkylcarbamyl radical, characterized in that a derivative of formula (II), ##STR2## wherein R has the same meaning as in formula (I), is reacted with nitronium tetrafluoroborate and derivatives of formula (II).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.