天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

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 2-CHLOROQUINOLINE-4-CARBOXYLIC ACID
5467-57-2

2-CHLOROQUINOLINE-4-CARBOXYLIC ACID synthesis

7synthesis methods
-

Yield: 87.5%

Reaction Conditions:

with trichlorophosphate for 1 h;Reflux;

Steps:

16.b
b) The product of the previous step (10.2 g, 53.9 mmol) was dissolved in 20 mL of phosphorus oxychloride and refluxed for 1 h. The phosphorus oxychloride was removed by rotary evaporation, the residue was poured into ice water, the pH was adjusted to 4-5 with a saturated aqueous solution of sodium bicarbonate, suction filtered, washed with water and dried to obtain 9.8 g of 2-chloroquinoline-4-carboxylic acid, the yield was 87.5%;

References:

China Pharmaceutical University;Xu Jinyi;Li Wenlong;Xu Shengtao;Xu Feijie;Shuai Wen;Sun Honghao;Zhu Zheying;Yao Hong CN109467549, 2019, A Location in patent:Paragraph 0027; 0100; 0104

2-CHLOROQUINOLINE-4-CARBOXYLIC ACID Related Search: