Approach to vicinal t-Boc-amino dibromides via catalytic aminobromination of nitrostyrenes without using chromatography and recrystallization.
Approach to vicinal t-Boc-amino dibromides via catalytic aminobromination of nitrostyrenes without using chromatography and recrystallization.
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DOI：
10.1021/jo302727v
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发表时间：
2013-02-01
期刊：
影响因子：
--
通讯作者：
Li G
中科院分区：
文献类型：
--
作者：
Sun H;Han J;Kattamuri PV;Pan Y;Li G
1.0 % Mol of K3PO4·3H2O was found to catalyze aminohalogenation reaction of nitrostyrenes with N,N-dibromo-tert-butylcarbamate (t-Boc-NBr2) in dichloroethane system. Good to excellent yields and complete regioselectivity have been achieved by taking advantage of the GAP work-up without using traditional purification techniques such as column chromatography and recrystallization. New mechanism was proposed involving radical and ionic catalytic cycles and an intramolecular migration.
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