Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen (Germany).
Angew Chem Int Ed Engl. 2013 Oct 25;52(44):11573-6. doi: 10.1002/anie.201304456. Epub 2013 Sep 6.
Revitalization by oxygen: A rhodium(III)-catalyzed oxidative CH/NH activation/annulation sequence provided access to a variety of substituted 1,2-benzothiazine derivatives from readily available NH-sulfoximines and alkynes (see scheme; Cp*=C5 Me5 ). The oxidation system consisted of molecular oxygen in combination with a catalytic amount of Fe(OAc)2 .
铑(III)催化的氧化 CH/NH 活化/环化串联反应,为各种取代的 1,2-苯并噻嗪衍生物的合成提供了一种方法,原料为易得的 NH-亚磺酰胺和炔烃(见方案;Cp*=C5Me5)。该氧化体系由分子氧和催化量的 Fe(OAc)2 组成。