ChemInform Abstract: High‐Yield Lithiation of Azobenzenes by Tin—Lithium Exchange.

Abstract

High-Yield Lithiation of Azobenzenes by Tin-Lithium Exchange. -Transmetalation of Me 3Sn-substituted azobenzenes with MeLi results in a rapid and selective Li-Sn exchange. Subsequent quenching with electrophiles provides regioselective access to corresponding functionalized products including doubly and triply azobenzene functionalized ones. -(STRUEBEN, J.; LIPFERT, M.; SPRINGER, J.-O.; GOULD, C. A.; GATES, P. J.; SOENNICHSEN, F. D.; STAUBITZ*, A.; Chem. -Eur. J. 21 (2015) 31, 11165-11173, http://dx.doi.org/10.1002/chem.201500003 ; Inst. Org. Chem.,