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-ACETAMIDO-4-(CHLOROMETHYL)THIAZOLE
7460-59-5

2-ACETAMIDO-4-(CHLOROMETHYL)THIAZOLE synthesis

5synthesis methods
-

Yield:7460-59-5 71%

Reaction Conditions:

in acetone; for 5 h;Heating / reflux;

Steps:

52-1

A solution of 50 g (0.42 mol) acetyl thiourea and 108.5 g 1,3-dichloro-propan-2-one (0.84 mol) in 500 ml acetone is heated to reflux for 5 hours. All volatiles were removed in vacuo and the residue was taken up in 200 ml acetone. After addition of 600 ml of water the precipitate was collected, washed with 250 ml n-heptane and dried in vacuo at 40° C. Yield: 56.9 g (71%) white solid. 1H-NMR (400 MHz, D6-DMSO): δ=2.13 (s, 3H); 4.71 (s, 2H); 7.22 (s, 1H); 12.21 (s, 1H)

References:

US2006/116407,2006,A1 Location in patent:Page/Page column 22

2-ACETAMIDO-4-(CHLOROMETHYL)THIAZOLE Related Search: