huagongshe.com
HRID614749

反应详情

EQUATION

反应方程式

HRID 614749 的结构方程式

REACTANTS

反应物

5
结构：Oc1cccc(O)c1
HCID5054

Resorcinol

C6H6O2

结构：CCOCC.FB(F)F
HCID8000

Ethane, 1,1'-oxybis-, compd. with trifluoroborane (1:1)

C4H10BF3O

结构：O=C1CCOc2ccccc21
HCID68110

4H-1-Benzopyran-4-one, 2,3-dihydro-

C9H8O2

结构：CCC1(C)CC(=O)c2ccc(O)cc2O1
HCID20570508

未命名化合物

结构：FC(F)(F)c1cccc([Mg]Br)c1
HCID178506173

未命名化合物

PRODUCTS

生成物

1
结构：CCC1(C)C=C(c2cccc(C(F)(F)F)c2)c2ccc(O)cc2O1
HCID20570565

未命名化合物

PROCEDURE

实验过程

2-Ethyl-7-hydroxy-2-methyl-4-chromanone, m.p. 109°-110.5° C., was prepared by condensing resorcinol with 3-methyl-2-pentanoic acid in the presence of boron trifluoride diethyl etherate. Reaction of the chromanone with 3-trifluoromethylphenyl magnesium bromide as described in Preparation 5 gave the title chromene as a golden yellow oil.

WORKUP

后处理

  1. customas described in Preparation 5