A new method for the preparation of pyrimidines by condensation of B-dicarbonyl compounds, ammonium salts and carbonyl containing substances has been developed. An attractive approach to the synthesis of 1,2\_dihydropyrimidines bearing alkyl or aryl groups consists of the reaction of B-dicarbonyl c
A novel one-step synthesis of pyrimidines and condensed pyrimidines
โ Scribed by Katsura Morita; Shigeru Kobayashi; Hiroshi Shimadzu; Michihiko Ochiai
- Publisher
- Elsevier Science
- Year
- 1970
- Tongue
- French
- Weight
- 180 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract A simple and straightforward methodology towards the synthesis of 2,4,5โtrisubstituted pyrimidines has been developed by oneโstep reaction of isoflavones with thiourea or guanidine. Ten 2โmercaptoโ4,5โdiphenylpyrimidines and eight 2โaminoโ4,5โdiphenylpyrimidines were reported. All of th
A new synthesis of 1-alkylpyrazolo [5,4-d]pyrimidines is described. The reaction of 4,6-dichloropyrimidine-5-carbaldehyde with various substituted hydrazines provides such compounds in a single step from commercially available starting materials. This method has advantages over methods currently des
We have found that irradiation of 4-hydroxypyraeolo[3,4-d)pyrimidine (I)l), this work. Thanks are also measurement of mass spectra 1. R.