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Song, Menghui; Zhou, Hongyan; Wang, Ganggang; Ma, Ben; Jiang, Yajing; Yang, Jingya; Huo, Congde; Wang, Xi-Cun
Journal of organic chemistry, 03/2021, Letnik: 86, Številka: 6Journal Article
A visible-light-promoted transfer hydrogenation of azobenzenes has been developed. In the presence of B2pin2 and upon visible-light irradiation, the reactions proceeded smoothly in methanol at ambient temperature. The azobenzenes with diverse functional groups have been reduced to the corresponding hydrazobenzenes with a yield of up to 96%. Preliminary mechanistic studies indicated that the hydrogen atom comes from the solvent and the transformation is achieved through a radical pathway.
