HRID464008

反应详情

EQUATION

反应方程式

HRID 464008 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

PROCEDURE

实验过程

A mixture of 9-bromoacetyl-6,9,11-trihydroxy-5,7,8,9,10,12-hexahydronaphthacene-5,12-dione (1.00 g) obtained in Reference Example 1-(1), sodium valerate (1.44 g) and acetone (50 ml) was stirred under reflux for 5 hours, cooled to room temperature and concentrated under reduced pressure. The residue was triturated with an adequate quantity of ether, and solid substances were filtered to give reddish crystals of 9-valeryloxyacetyl-6,9,11-trihydroxy-5,7,8,9,10,12-hexahydronaphthacene-5,12-dione. M.P., 170°-172° C.

WORKUP

后处理

  1. temperatureunder reflux for 5 hours
  2. concentrationconcentrated under reduced pressure
  3. customThe residue was triturated with an adequate quantity of ether, and solid substances
  4. filtrationwere filtered