Mild and Regioselective Pd(OAc)<sub>2</sub>-Catalyzed C–H Arylation of Tryptophans by [ArN<sub>2</sub>]X, Promoted by Tosic Acid
作者:Alan J. Reay、L. Anders Hammarback、Joshua T. W. Bray、Thomas Sheridan、David Turnbull、Adrian C. Whitwood、Ian J. S. Fairlamb
DOI:10.1021/acscatal.6b03121
日期:2017.8.4
regioselective Pd-mediated C-H bond arylation methodology for tryptophans, utilizing stable aryldiazonium salts, affords C2-arylated tryptophan derivatives, in several cases quantitatively. The reactions proceed in air, without base, and at room temperature in EtOAc. The synthetic methodology has been evaluated and compared against other tryptophan derivative arylation methods using the CHEM21 green chemistry