Synthesis of 2-Azaindolizines by Using an Iodine-Mediated Oxidative Desulfurization Promoted Cyclization of N-2-Pyridylmethyl Thioamides and an Investigation of Their Photophysical Properties
摘要:
Iodine-mediated, oxidative desulfurization promoted cyclization of N-2-pyridylmethyl thioamides serves as an efficient and versatile method for the preparation of 2-azaindolizines (imidazo[1,5-a]pyridines) and rare 2-azaindolizine sulfur-bridged dimers. The 2-azaindolizines prepared in this manner are readily converted to a variety of fluorescent compounds by using transition-metal-catalyzed cross-coupling reactions.
lanthanide catalysts showed high catalytic activity and a wide scope of substrates with good to excellent yields under solvent‐freeconditions. Efficient activation of the transamidation can be realized by the above complexes acting as cooperative acid–base bifunctional catalysts, which are proposed to be responsible for the higher reactivity in comparison with simple monometallic catalysts.
Imidazo[1,5-a]pyridine-1-ylalkylalcohols: synthesis via intramolecular cyclization of N-thioacyl 1,2-aminoalcohols and their silyl ethers and molecular structures
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。
THIAZOLE DERIVATIVE AND PROCESS FOR PRODUCING SAME
申请人:Gifu University
公开号:EP2388253B1
公开(公告)日:2015-02-11
TECHNETIUM- AND RHENIUM-BIS(HETEROARYL) COMPLEXES AND METHODS OF USE THEREOF FOR INHIBITING PSMA