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Ruifeng Yin, Liejin Zhou, Huili Liu, Hui Mao, Xin Lü and Xiaoxia Wang Reactivity of AllylSmBr/HMPA: Facile Synthesis of 3-Aryl-1,2,4-benzotriazines Chinese Journal of Chemistry 31

Version of Record online: 28 DEC 2012 | DOI: 10.1002/cjoc.201200989

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3-Aryl-1,2,4-benzotriazines were conveniently prepared in moderate to good yields from 1,l-bis(benzotriazol-1-yl) methylarenes with allylsamarium bromide/hexamethyl-phosphramide (allylSmBr/HMPA). Preliminary results indicate that HMPA has the potential to enhance the reducing ability as well as to prohibit the nucleophicility of allylSmBr, thus making allylSmBr/HMPA as a promising single-electron transfer (SET) reagent.

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