aromatic acid

Application of polyphosphoric acid on acylation of aromatic amines

聚磷酸在芳胺中芳环酰化反应中的应用

Recent studies on catalysis by heteropoly acid ( HPA) for the synthesis of aromatic ketone by Friedel-Crafts acylation reaction and Fries rearrangement of aryl esters are reviewed.

综述了杂多酸及其盐在合成芳酮的Friedel-Crafts（F-C）酰化反应和Fries重排中的应用，并与其它类型的催化剂作了比较。

Synthesis of bis ( indolyl) methanes via electrophilic substitution reactions of indoles with aromatic aldehydes and ketones catalyzed by aminosulfonic acid was carried out in 23-96% yield at 30~ 38 ° C in EtOH aqueous solution under ultrasound irradiation.

超声辐射下在30～38℃的乙醇水溶液中，氨基磺酸催化吲哚与芳香醛或酮反应合成二吲哚甲烷，产率23～96%。

The major anthocyanins in purple sweet potato are cyanidin and peonidin acylated with aromatic acid.

其花色苷的主要类型为芳香酸酰化的矢车菊素和芍药素.

Up to now, the methods for preparing aromatic ketones still involve homogeneous metal chlorides or protonic acid used as catalysts in batch reactors via Friedel-Crafts acylation in industry.

目前，工业上通过Friedel-Crafts酰基化反应制备芳酮类化合物的工艺仍然是以均相的金属氯化物或质子酸等为催化剂，采用釜式反应器。

The other antigens with higher positive rate were sulphuric acid nickel, aromatic mixture, formaldehyde, sodium mercurothiolate and ursol D in turn.

其余阳性率较高的抗原依次是硫酸镍、芳香混合物、甲醛、硫柳汞、对苯二胺、二盐酸乙二按、替可的松新戊酸盐等。