تفاعل #2005556

معادلة التفاعل

7-(5,5-dimethyl-[1,3,2]dioxaborinan-2-yl)-2,2-difluoro-benzo[1,3]dioxole-5-carboxylic acid methyl ester

H2O2

→

title compound

2,2-Difluoro-7-hydroxy-benzo[1,3]dioxole-5-carboxylic acid methyl ester

المذيبات

methanol

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITIONadded
2. 2
   تركيزThe reaction mixture was then concentrated to 20 ml and 100 ml of water and 100 ml of a saturated aqueous NaCl-solution
3. 3
   workup.ADDITIONadded
4. 4
   استخلاصThe reaction mixture was then extracted three times
5. 5
   أخرىdried
6. 6
   أخرىevaporated

الإجراء التجريبي

6.0 g of 7-(5,5-dimethyl-[1,3,2]dioxaborinan-2-yl)-2,2-difluoro-benzo[1,3]dioxole-5-carboxylic acid methyl ester were dissolved using 200 ml of methanol and 30 ml of a 33% aqueous solution of H2O2 added. Stirring was continued for 30 minutes at room temperature. The reaction mixture was then concentrated to 20 ml and 100 ml of water and 100 ml of a saturated aqueous NaCl-solution added. The reaction mixture was then extracted three times using 100 ml of CH2Cl2 each, dried using MgSO4, and evaporated. Chromatography on silica gel using EA/HEP 1:4 yielded 1.8 g of the title compound, colorless oil.

المصدر