Iminophosphorane-Mediated Synthesis of Pyrido[2,3-d]pyrimidine Derivatives
- 1 January 1990
- journal article
- research article
- Published by Georg Thieme Verlag KG in Synthesis
- Vol. 1990 (06) , 474-475
- https://doi.org/10.1055/s-1990-26908
Abstract
The 5-(2-nitroethenyl)-6-[(triphenylphosphoranylidene)amino]-pyrimidine derivative 3, prepared from 1,3-dimethyl-2,4-dioxo-6-[(triphenylphosphoranylidene)amino] -1,2,3,4-tetrahydropyrimidine (1) and 1-dimethylamino-2-nitroethylene (2), reacts with aryl isocyanates 4 to give 7-arylamino-1, 3-dimethyl-2,4-dioxo-6-nitro-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidines 6 in good yield.Keywords
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