dilution. These reactions were utilized to quantitatively examine the extent of retardation of medium-sized ring formation, compared to five- or six-membered ring formation. The order of reaction rates of formation of cyclic benzolactams is six- > five- > seven- > eight- > nine-membered ring at 25 °C. The present reaction provides a route to eight- and nine-membered benzolactams.
通过
氨基
甲酰基阳离子(R1R2N +═C═O)的亲电芳族取代反应,无需稀释即可良好地获得高收率的苯甲酰胺。与五元或六元环形成相比,这些反应用于定量检测中型环形成的延迟程度。在25°C时,形成环苯并内酰胺的反应速率的顺序为六->五->七->八->九元环。本反应提供了八元和九元苯并内酰胺的途径。