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【结 构 式】

【分子编号】32160

【品名】2,3-dihydro-1,4-benzodioxine-2-carbonyl chloride

【CA登记号】

【 分 子 式 】C9H7ClO3

【 分 子 量 】198.60548

【元素组成】C 54.43% H 3.55% Cl 17.85% O 24.17%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号:(II)

The acylation of piperazine (I) with 1,4-benzodioxan-2-ylcarbonyl chloride (II) by means of sodium acetate in water-acetone gives N-(1,4-benzodioxan-2-carbonyl)piperazine (III), which is then condensed with 4-amino-2-chloro-6,7-dimethoxyquinazoline (IV) in refluxing butanol.

1 Campbell, S.F. (Pfizer Inc.); Antihypertensive 4-amino-2-[4-(1,4-benzodioxan-2-carbonyl) piperazin-1-yl or homopiperazin-1-yl]quinazolines. DE 2847623; FR 24079529; US 4188390 .
2 Serradell, M.N.; Castaner, J.; Blancafort, P.; Doxazosin. Drugs Fut 1982, 7, 12, 877.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 10355 Diethylenediamine; Piperazine 110-85-0 C4H10N2 详情 详情
(II) 32160 2,3-dihydro-1,4-benzodioxine-2-carbonyl chloride C9H7ClO3 详情 详情
(III) 32161 2,3-dihydro-1,4-benzodioxin-2-yl(1-piperazinyl)methanone C13H16N2O3 详情 详情
(IV) 10443 2-Chloro-6,7-dimethoxy-4-quinazolinamine; 4-Amino-2-chloro-6,7-dimethoxyquinazoline; 2-Chloro-6,7-dimethoxy-4-quinazolinylamine 23680-84-4 C10H10ClN3O2 详情 详情
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