Novel rearrangement of N-(9H-carbazol-9-yl)arylaminyl radicals
摘要:
The title radicals were generated from 2-(arylazo)-2'-iodobiphenyls using the tin hydride method. When the aryl substituent has an acetyloxy or a benzoyloxy group in the ortho position, besides reduction of the hydrazyl radical, a migration of the acetyl or benzoyl from oxygen to nitrogen atom took place. The mechanism of the rearrangement is discussed, and evidences supporting a radical pathway are reported, including EPR characterization of the intermediates.
Novel rearrangement of N-(9H-carbazol-9-yl)arylaminyl radicals
摘要:
The title radicals were generated from 2-(arylazo)-2'-iodobiphenyls using the tin hydride method. When the aryl substituent has an acetyloxy or a benzoyloxy group in the ortho position, besides reduction of the hydrazyl radical, a migration of the acetyl or benzoyl from oxygen to nitrogen atom took place. The mechanism of the rearrangement is discussed, and evidences supporting a radical pathway are reported, including EPR characterization of the intermediates.
The title radicals were generated from 2-(arylazo)-2'-iodobiphenyls using the tin hydride method. When the aryl substituent has an acetyloxy or a benzoyloxy group in the ortho position, besides reduction of the hydrazyl radical, a migration of the acetyl or benzoyl from oxygen to nitrogen atom took place. The mechanism of the rearrangement is discussed, and evidences supporting a radical pathway are reported, including EPR characterization of the intermediates.