Process for preparing derivatives of (halo)amino-1,3,5-triazines by carbonylation
US6197957A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1993 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Oct 15, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D251/70
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided is a process for preparing carbonylated derivatives of amino- and haloamino-1,3,5-triazines by contacting the 1,3,5-triazine, carbon monoxide and a metal catalyst system containing a metal promoter for promoting carbonylation, at a temperature carbon monoxide pressure and length of time sufficient to carbonylate at least a portion of the amino and/or haloamino groups of the 1,3,5-triazine. The product resulting from contacting these components is an isocyanate functional 1,3,5-triazine; however, the carbamate functional derivative can be readily produced by contacting these components in the further presence of a hydroxy compound, or by post-reacting the isocyanate functional product with such hydroxy compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.