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
010-86108875
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 O-Desmorpholinopropyl Gefitinib
184475-71-6

O-Desmorpholinopropyl Gefitinib synthesis

8synthesis methods
-

Yield:184475-71-6 95.3%

Reaction Conditions:

with sodium methoxide in methanol; for 3 h;Reflux;

Steps:

1.5 5) Preparation of 4- (3-chloro-4-fluoro) phenylamino-6-hydroxy-7-methoxyquinazoline (6)

To the reaction vessel was added 4- (3-chloro-4-fluoro) phenylamino-6-carbethoxy-7-methoxyquinazoline (3.61 g,10mmol), dissolved in 30mL methanol, added sodium methoxide (2.7g, 50mmol), stirred evenly, heated to reflux, reaction 3hour. After completion of the reaction, the solid was removed by filtration, and the solid was cooled to give 4- (3-chloro-4-fluoro) phenylamino-6-hydroxy-7-methoxy Ylquinazoline was obtained in a yield of 95.3%.

References:

CN106045980,2016,A Location in patent:Paragraph 0027; 0028; 0029

O-Desmorpholinopropyl Gefitinib Related Search: