Palladium-Catalyzed Oxidation of Boc-Protected N-Methylamines with IOAc as the Oxidant: A Boc-Directed sp3 C−H Bond Activation
摘要:
Pd-catalyzed selective oxidation of Boc-protected N-methylamines with IOAc as the oxidant is described. Evidence for the involvement of a Boc-directed C-H activation process is provided.
Convenient Method for the Preparation of Weinreb Amides via Pd-Catalyzed Aminocarbonylation of Aryl Bromides at Atmospheric Pressure
作者:Joseph R. Martinelli、Dominique M. M. Freckmann、Stephen L. Buchwald
DOI:10.1021/ol061902t
日期:2006.10.1
[GRAPHICS]The direct transformation of aryl bromides into the corresponding Weinreb amides via Pd-catalyzed aminocarbonylation at atmospheric pressure is reported.
Palladium-Catalyzed Oxidation of <i>Boc</i>-Protected <i>N</i>-Methylamines with IOAc as the Oxidant: A <i>Boc-</i>Directed sp<sup>3</sup> C−H Bond Activation
作者:Dong-Hui Wang、Xue-Shi Hao、Di-Fu Wu、Jin-Quan Yu
DOI:10.1021/ol061384m
日期:2006.7.1
Pd-catalyzed selective oxidation of Boc-protected N-methylamines with IOAc as the oxidant is described. Evidence for the involvement of a Boc-directed C-H activation process is provided.
Palladium-Catalyzed Carbonylation Reactions of Aryl Bromides at Atmospheric Pressure: A General System Based on Xantphos
作者:Joseph R. Martinelli、Donald A. Watson、Dominique M. M. Freckmann、Timothy E. Barder、Stephen L. Buchwald
DOI:10.1021/jo801279r
日期:2008.9.19
A method for the Pd-catalyzed carbonylation of aryl bromides has been developed usingXantphos as the ligand. This method is effective for the direct synthesis of Weinreb amides, primary and secondary benzamides, and methyl esters from the corresponding aryl bromides at atmosphericpressure. In addition, a putative catalytic intermediate, (Xanphos)Pd(Br)benzoyl, was prepared and an X-ray crystal structure