Preparation of tris-substituted alkoxycarbonylamino-1,3,5-triazine compounds
US6121446A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Nov 10, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D251/70
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing tris-substituted alkoxycarbonylamino-1,3,5-triazine compounds, which involves reacting a amino-1,3,5-triazine compound such as melamine, for example, in the presence of excess amounts of carbon monoxide and an alcohol, a sub-stoichiometric amount of a base, a catalyst system that includes a catalytic amount of a primary catalyst of a group VIII metal or metal salt, and a sub-stoichiometric amount of a co-catalyst of a group I-B or lanthanide series metal or metal salt. The reaction is conducted at a temperature, pressure and length of time sufficient to form a tris-substituted alkoxycarbonylamino-1,3,5-triazine compound in a yield of at least about 5 percent, with improved yields of more than 40 percent being conveniently obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.