期刊
ACS OMEGA
卷 6, 期 41, 页码 27466-27477出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.1c04352
关键词
-
资金
- University Grants Commission (UGC), India
- SERB, DST [SB/EMEQ-006/3013]
The synthesis employs N-bromosuccinimide (NBS) as the brominating agent mediated by selenium dioxide (SeO2) in the presence of p-toluenesulfonic acid (PTSA) monohydrate in toluene to achieve alpha,beta-unsaturated alpha'-bromoketones and alpha,beta-unsaturated alpha',alpha'-dibromo-ketones. Simple adjustment of reaction conditions and molar equivalents of reactants can yield either mono- or dibrominated products in excellent yields. Some of the products synthesized have not been previously reported in the literature.
An efficient method for the synthesis of alpha,beta-unsaturated alpha'-bromoketones and alpha,beta-unsaturated alpha',alpha'-dibromo-ketones is described using N-bromosuccinimide (NBS) as the brominating agent mediated by selenium dioxide (SeO2) in the presence of p-toluenesulfonic acid (PTSA) monohydrate in toluene. The method is simple, employing easily available shelf reagents to afford a wide range of products in good yields. The method highlighted that simple fine-tuning of the reaction conditions and molar equivalents of the reactants easily affords either mono- or dibrominated products in excellent yields. A number of these products have not been reported in the literature. All of the reactions were carried out in gram-scale quantities.
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