成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 1,2-BENZENEDICARBOXYLIC ACID,4-BROMO-,1,2-DIETHYL ESTER
38568-41-1

1,2-BENZENEDICARBOXYLIC ACID,4-BROMO-,1,2-DIETHYL ESTER synthesis

8synthesis methods
-

Yield:38568-41-1 88%

Reaction Conditions:

with sulfuric acid at 79; for 0.5 h;Microwave radiation;

Steps:

8.1

1.0 ml of concentrated sulphuric acid is added to a solution of 1.0 g of 4-bromophthalic acid in 20 ml of ethanol. The reaction medium is irradiated at 79° C. with microwave radiation (power 50 W) for 30 minutes. The reaction medium is concentrated under reduced pressure and extracted with ethyl acetate. The solution is washed with water and dried over sodium sulphate, then filtered to produce, after concentrating under reduced pressure, 1.08 g of the expected product. Yield: 88%

References:

US2004/72871,2004,A1 Location in patent:Page/Page column 18

1,2-BENZENEDICARBOXYLIC ACID,4-BROMO-,1,2-DIETHYL ESTER Related Search: