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 4-Methylsulphonyl benzaldehyde
5398-77-6

4-Methylsulphonyl benzaldehyde synthesis

12synthesis methods
-

Yield:5398-77-6 98%

Reaction Conditions:

with hydrogenchloride in 1,4-dioxane at 100; for 0.333333 h;

Steps:

3 4-(Methylsulfonyl)benzaldehyde

Add 1 N hydrochloric acid (200 ml) to a dioxane (200 ml) solution of 4-methylsulfonylbenzaldehyde dimethyl acetal (39.4 g, 0.171 mol) obtained in Production Example 2. The mixture was heated and stirred at 100°C for 20 minutes. After allowing the reaction mixture to cool, the crystals obtained by shrinking under reduced pressure were collected by filtration.After washing with water and drying, the title compound was obtained as colorless crystals (30.9 g, 98%).

References:

WO1991/12237,1991,A1 Location in patent:Page/Page column 47

4-Methylsulphonyl benzaldehyde Related Search: