An Efficient One-Pot Synthesis of New 2- Thioxo and 2-oxo-pyrimidine-5-carbonitriles in Ball-Milling Under Solvent-Free and Catalyst-Free Conditions
摘要:
Various 2-thioxo and 2-oxo-1,2,3,4-tetrahydro-pyrimidine-5-carbonitriles were synthesized in very high yields in 40min through a direct condensation of an equimolar amount of an aldehyde, malononitrile, and thiourea/urea under ball mill solvent-free and catalyst-free conditions.