Imidazo[1,5-a]pyridine-1-ylalkylalcohols: synthesis via intramolecular cyclization of N-thioacyl 1,2-aminoalcohols and their silyl ethers and molecular structures
作者:Toshiaki Murai、Eri Nagaya、Fumitoshi Shibahara、Toshifumi Maruyama
DOI:10.1039/c2ob25438g
日期:——
Iodine-mediated cyclization of N-thioacyl 1,2-aminoalcohols derived from aromatic aldehydes and ketones mainly produced bis(1-imidazo[1,5-a]pyridyl)arylmethanes, whereas the reaction of N-thioacyl 1,2-aminoalcohols derived from aliphatic aldehydes and N-thioacyl 1,2-aminoalcohols protected with a silyl group with iodine gave imidazo[1,5-a]pyridine-1-ylalkylalcohols as a major product.
碘介导的衍生自芳香族醛和酮的N-硫代酰基1,2-氨基醇的环化反应主要产生双(1-咪唑并[1,5- a ]吡啶基)芳基甲烷,而N-硫代酰基1,2-氨基醇的反应由脂肪醛和由甲硅烷基用碘保护的N-硫代酰基1,2-氨基醇由咪唑并[1,5 - a ]吡啶-1-基烷基醇制成主要产物。