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【结 构 式】 
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【分子编号】38771 【品名】4-(3,5-dimethylbenzyl)-5-isopropyl-6-methoxy-2-pyrimidinyl methyl ether; 4-(3,5-dimethylbenzyl)-5-isopropyl-2,6-dimethoxypyrimidine 【CA登记号】 |
【 分 子 式 】C18H24N2O2 【 分 子 量 】300.40084 【元素组成】C 71.97% H 8.05% N 9.33% O 10.65% |
合成路线1
该中间体在本合成路线中的序号：(IX)In an alternative procedure, condensation of 5-isopropyl-2,4,6-trichloropyrimidine (VI) with 3,5-dimethylbenzylmagnesium chloride (VII) in cold THF produced the 6-benzyl pyrimidine derivative (VIII). Subsequent reaction of (VIII) with sodium methoxide gave dimethoxypyrimidine (IX), which was hydrolyzed to uracil (X) with concentrated HCl. After silylation of (X) with chlorotrimethylsilane and hexamethyldisilazane, alkylation with chloromethyl ethyl ether in the presence of SnCl4 furnished the title compound.
| 【1】 Lee, Y.S.; Kim, Y.H.; Regioselective alkylation and arylation at the 6-position of pyrimidine: Syntheisis of 5-alkyl-6-arylmethyl-2,4-pyrimidinediones. Synth Commun 1999, 29, 9, 1503. |
| 中间体序号 | 中间体编号 | 品名 | CAS号 | 分子式 | 供应商 | 用于合成 |
|---|---|---|---|---|---|---|
| (VI) | 38768 | 2,4,6-trichloro-5-isopropylpyrimidine | C7H7Cl3N2 | 详情 | 详情 | |
| (VII) | 38769 | chloro(3,5-dimethylbenzyl)magnesium | C9H11ClMg | 详情 | 详情 | |
| (VIII) | 38770 | 2,4-dichloro-6-(3,5-dimethylbenzyl)-5-isopropylpyrimidine | C16H18Cl2N2 | 详情 | 详情 | |
| (IX) | 38771 | 4-(3,5-dimethylbenzyl)-5-isopropyl-6-methoxy-2-pyrimidinyl methyl ether; 4-(3,5-dimethylbenzyl)-5-isopropyl-2,6-dimethoxypyrimidine | C18H24N2O2 | 详情 | 详情 | |
| (X) | 38772 | 6-(3,5-dimethylbenzyl)-5-isopropyl-2,4(1H,3H)-pyrimidinedione | C16H20N2O2 | 详情 | 详情 |