Add time:08/12/2019         Source:sciencedirect.com

A series of 1,6-dihydro-5-(4H)-pyrimidinone oxime derivatives I was synthesized (Scheme. 1Download high-res image (53KB)Download full-size imageScheme. 1. Synthesis of dihydropyrimidine oxime derivatives. (A) O=C(CH2NH2)2, MeOH, 20–96 h reflux; (B) O=(CH2Cl2)2, MeOH, 2 h, 40 °C; (C) PhtNK, DMF, 4 h, 100 °C; (D) NaONH2, MeOH, 2 h, rt; (E) HC(OCH3)3, MeOH, 20 h, reflux; (F) CH3C(OCH3)3, MeOH, 20 h reflux; (G) H2NH2C(C=O)CH(CH3)NH2MeOH, 20 h reflux.

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