2H-1,4-benzoxazine-3(4H)-thione -Drug Synthesis Database

【结构式】

【分子编号】27368

【品名】2H-1,4-benzoxazine-3(4H)-thione

【CA登记号】

【分子式】C₈H₇NOS

【分子量】165.21572

【元素组成】C 58.16% H 4.27% N 8.48% O 9.68% S 19.41%

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：(IV)

The cyclocondensation of 2H-1,4 benzoxazine-3(4H)-thione (IV) with ethyl carbazate (II) in refluxing DMF gives 2,4-dihydro[1,2,4]triazolo[3,4-c][1,4]benzoxazin-1-one (V), which is nitrated at room temperature with a mixture of concentrated HNO3 and H2SO4.

参考文献中间体

合成目标

【1】 Shridhar, D.R.; Potential diuretics. Part I. Synthesis of some substituted 2,4-dihydro-1-oxo/thioxo-1,2,4-triazolo[3,4-c][1,4]benzoxazines - Novel diuretic agents. Indian J Chem 1984, 238, 1279.
【2】 Shridhar, D.R.; Arya, V.P.; IDPH-8032. Drugs Fut 1985, 10, 7, 559.

中间体序号	中间体编号	品名	CAS号	分子式	供应商	用于合成
(II)	27366	Ethyl hydrazinecarboxylate; Ethyl 1-hydrazinecarboxylate	4114-31-2	C₃H₈N₂O₂	详情	详情
(IV)	27368	2H-1,4-benzoxazine-3(4H)-thione		C₈H₇NOS	详情	详情
(V)	27369	2,4-dihydro-1H-[1,2,4]triazolo[3,4-c][1,4]benzoxazin-1-one		C₉H₇N₃O₂	详情	详情

Extended Information