Diethyl Ether → 4-(3,4-Dihydro-4-oxo-2-phenyl-5-pyrimidinyl)-o-phenylene diacetate

反応式

Br.[OH:2][C:3]1[CH:4]=[C:5]([C:10]2[C:11](=[O:22])[NH:12][C:13]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)=[N:14][CH:15]=2)[CH:6]=[CH:7][C:8]=1[OH:9].[C:23](OC(=O)C)(=[O:25])[CH3:24].[CH2:30]([O:32]CC)[CH3:31]>N1C=CC=CC=1>[C:23]([O:9][C:8]1[CH:7]=[CH:6][C:5]([C:10]2[C:11](=[O:22])[NH:12][C:13]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)=[N:14][CH:15]=2)=[CH:4][C:3]=1[O:2][C:30](=[O:32])[CH3:31])(=[O:25])[CH3:24]

参加物

実験手順

5-(3,4-Dihydroxyphenyl)-2-phenyl-4(3H)-pyrimidinone hydrobromide (6.0 g) (21.4 mmol) are dissolved in 100 ml of pyridine and treated at room temperature while stirring with 5.2 g (51 mmol) of acetic anhydride. After 1.5 hours 200 ml of diethyl ether are added thereto and the precipitated product is filtered off. The solid is washed with diethyl ether and dried in a high vacuum at 35° C. There are obtained 7.1 g of 4-(3,4-dihydro-4-oxo-2-phenyl-5-pyrimidinyl)-o-phenylene diacetate as white crystals of m.p. 240° C.