* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Weigh 50g of gallic acid,Pour into a 500ml jar after drying,Then added 25% concentrated ammonia water 250ml,Plug the bottle with a stopper,Stir in a constant temperature water bath at 50 C for 12 h.The reaction solution was then poured into a 1000 ml dry three-necked flask.60 g of m-CPBA was charged and reacted for 10 hours.After the reaction is over,Filter the reaction solution,The filter cake was dissolved in 10% NaOH solution.Put in 250g of activated carbon,Stirring at 35 C,Filtration, the filtrate was extracted three times with dichloromethane, the filtrate was separated, and the filtrate was adjusted to pH 2 with 10% hydrochloric acid.Crystallization, filtration, and drying to obtain pale yellow ellagic acid.Its yield was 84%.
(1) Accurately weigh 124 mg of <strong>[19387-91-8]tinidazole</strong> and106 mgPropionate gallatePlacedIn a 50 mL round bottom flask, 10 mL of distilled water was added and a reflux device was installed.(2) The reaction was stirred for 1 hour in a water bath at 60 C, and the solution gradually changed from a colorless solution to a pale yellow clear solution.(3) The reaction solution was filtered through a medium speed filter paper, and the filtrate was placed in a 50 mL beaker. The beaker mouth was covered with a plastic wrap, and three small openings were placed with a syringe, and the crystal was allowed to stand. A yellow bulk solid precipitated after about 24 hours and was eutectic with <strong>[19387-91-8]tinidazole</strong>-propyl gallate drug.
Chemistry
Pharmaceutical Intermediates
Inhibitors/Agonists
Material Science
For Research Only
120K+ Compounds
Competitive Price
1-2 Day Shipping
