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 4-Aminobenzoic acid 4-aminophenyl ester
20610-77-9

4-Aminobenzoic acid 4-aminophenyl ester synthesis

4synthesis methods
-

Yield:20610-77-9 99%

Reaction Conditions:

with hydrogen;palladium 10% on activated carbon in ethyl acetate;

Steps:

1.2

11.0 g of 4-nitrophenyl 4-nitrobenzoate (38.2 mM) were dissolved in 350 ml of ethyl acetate and 1.0 g of palladium on charcoal (10%) was added. The resulting mixture was hydrogenated at atmospheric pressure until the theoretical amount of hydrogen was consumed. The mixture was then filtered, the cake was washed with ethyl acetate and the filtrate was evaporated to dryness to give 8.71 g (38.2 mM, 99 %) of 4-aminophenyl 4-aminobenzoate as slightly beige crystals.

References:

EP1593713,2005,A1 Location in patent:Page/Page column 15

4-Aminobenzoic acid 4-aminophenyl ester Related Search: