HRID267963

反应详情

EQUATION

反应方程式

HRID 267963 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A solution of 8.7 g 0f 1,2,3,4-tetrahydro-8,9-dimethoxy-3-(2-morpholinoethyl)-5H[1]benzopyrano[3,4-c]pyridin-5-one in 60 cc of 48% HBr was refluxed for 17 hr then cooled. Crystallization of precipitate from water afforded 5.5 g of product; mp 299°-302° C.

WORKUP

后处理

  1. temperaturethen cooled
  2. customCrystallization of precipitate from water