Aminobromination of β-Nitrostyrene Derivatives with N,N-Dibromourethane as the Aminobrominating Reagent

被引:23
作者
Chen, Zhan-Guo [1 ,2 ]
Zhao, Peng-Fei [1 ,2 ]
Wang, Yun [1 ,2 ]
机构
[1] Shaanxi Normal Univ, Sch Chem & Mat Sci, Xian 710062, Peoples R China
[2] Key Lab Macromol Sci Shaanxi Prov, Xian 710062, Peoples R China
关键词
Amination; Halogenation; Regioselectivity; Electrophilic addition; Synthetic methods; CATALYTIC AMINOHALOGENATION REACTION; STEREOSELECTIVE AMINOHALOGENATION; N-BROMOACETAMIDE; PSEUDO-HALOGENS; NITROGEN; OLEFINS; AMINOCHLORINATION; KETONES; FACILE; N; N-DICHLORO-P-TOLUENESULFONAMIDE;
D O I
10.1002/ejoc.201100751
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A concise and efficient aminobromination reaction for beta-nitrostyrene derivatives by treatment with N,N-dibromourethane was developed. For the beta-nitrostyrene derivatives, the aminobromination successfully proceeded at room temperature in CH3CN without catalysis or protection by an inert gas and gave products in excellent yields (80-97%). For the beta-methyl analogs, the reaction proceeded smoothly with anhydrous K2CO3 as a catalyst under the same conditions to provide the aminobrominated products in good yields (53-78%). A possible pathway for this electrophilic addition reaction is proposed.
引用
收藏
页码:5887 / 5893
页数:7
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