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 1-(3-((2-CHLOROPHENYL)AMINO)-5-METHYL-2,4-THIAZOLYL)ETHAN-1-ONE
883265-08-5

1-(3-((2-CHLOROPHENYL)AMINO)-5-METHYL-2,4-THIAZOLYL)ETHAN-1-ONE synthesis

3synthesis methods
-

Yield:883265-08-5 79%

Reaction Conditions:

with N-Bromosuccinimide;dibenzoyl peroxide in benzene; for 6 h;Reflux;

Steps:

Aminothiazoles 3a-g; general procedure

General procedure: A mixture of N-arylthiourea 1a-g (0.01 mol), acetylacetone 2 (1 g, 0.01mol), N-bromosuccinimide (1.79 g, 0.01 mol) and benzoyl peroxide (0.12 g) in anhydrous benzene (40 mL) was heated to reflux for 6 h (completion indicated by TLC). The solvent was evaporated and the residue was dissolved in water and basified with 5% aqueous K2CO3 to pH 9. The resulting precipitate was filtered off and washed thoroughly with ethanol and water. Recrystallisation of the crude product from ethyl acetate afforded the title compound 3a.

References:

Shi, Hai-Bo;Hu, Wei-Xiao;Zhang, Wei-Mao;Wu, Yan-Fei [Journal of Chemical Research,2016,vol. 40,# 2,p. 67 - 72]