Palladium-Catalyzed Synthesis of 1,2,3,4-Tetrahydro-5H-2-benzazepin-5-ones
作者:Howard Alper、Kazumi Okuro
DOI:10.1055/s-0032-1317183
日期:——
Palladium-catalyzedintermolecular cyclocarbonylation of 2-iodobenzylamines with Michael acceptors produces 1,2,3,4-tetrahydro-5H-2-benzazepin-5-one derivatives in moderate to good yields. This methodology enables the direct preparation of highly functionalized 1,2,3,4-tetrahydro-5H-2-benzazepin-5-ones from readily available starting materials.
challenging to prepare, especially in opticallyactive form. A Michael addition/proton transfer/lactamization organocascade process is described that delivers medium‐sized lactams, including azepanones, benzazepinones, azocanones, and benzazocinones, in high enantiopurity through the intermediacy of chiral α,β‐unsaturated acylammonium salts. An unexpected indoline synthesis was also uncovered, and the benzazocinone
The present invention relates a specific tetrahydroisoquinoline compound which is useful as a chemokine receptor type 3 (CCR3) antagonist, and a pharmaceutical composition comprising the same as an active ingredient. The tetrahydroisoquinoline compound of the present invention is useful for the treatment or prevention of a disease in which CCR3 participates.