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 (3aR,4S,6R,6aS)-6-(7-(((1R,2S)-2-(3,4-difluorophenyl)cyclopropyl)aMino)-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-2,2-
274693-49-1

(3aR,4S,6R,6aS)-6-(7-(((1R,2S)-2-(3,4-difluorophenyl)cyclopropyl)aMino)-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-2,2- synthesis

12synthesis methods
-

Yield:274693-49-1 412.3 g

Reaction Conditions:

with toluene-4-sulfonic acid in ethanol; for 12.5 h;Reflux;

Steps:

5 Example 5 Preparation of compound 9

Under the room temperature condition, to a 2L four-necked round bottom flask was added reaction solvent ethanol 1L and 385 g compound (8) (0.83 mol). Slowly add 2,2-diethoxypropane 132 g (1 mol) and p-toluenesulfonic acid 8 g. After stirring for half an hour, heat to reflux, TLC monitoring reaction. After reaction 12 hours, finish. Lower to room temperature, [...] and sodium carbonate aqueous solution 500 ml washing, separating, the aqueous phase is butyl acetate extraction (3 * 1 L), the combined organic phase, through the concentrated under reduced pressure to obtain compound (9) crude product, crude product by the ethanol/water recrystallize to get intermediate (9) 412.3 g.

References:

CN107141298,2017,A Location in patent:Paragraph 0029

(3aR,4S,6R,6aS)-6-(7-(((1R,2S)-2-(3,4-difluorophenyl)cyclopropyl)aMino)-5-(propylthio)-3H-[1,2,3]triazolo[4,5-d]pyriMidin-3-yl)-2,2- Related Search: