Nickel-Mediated Cross-Coupling of Boronic Acids and Phthalimides for the Synthesis of <i>Ortho</i>-Substituted Benzamides
作者:Ethan M. Heyboer、Rebecca L. Johnson、Megan R. Kwiatkowski、Trey C. Pankratz、Mason C. Yoder、Kimberly S. DeGlopper、Grace C. Ahlgrim、Joseph M. Dennis、Jeffrey B. Johnson
DOI:10.1021/acs.joc.9b03396
日期:2020.3.6
The decarbonylative coupling of phthalimides with aryl boronic acids provides ready access to a broad range of ortho-substituted benzamides. This nickel-mediated methodology extends reactivity from previously described air-sensitive diorganozinc reagents of limited availability to easily handled and widely commercially available boronic acids. The decarbonylative coupling is tolerant of a broad range
Nickel-Mediated Decarbonylative Cross-Coupling of Phthalimides with in Situ Generated Diorganozinc Reagents
作者:Sarah E. Havlik、Jessica M. Simmons、Valerie J. Winton、Jeffrey B. Johnson
DOI:10.1021/jo200347j
日期:2011.5.6
The nickel-mediated cross-coupling of phthalimides with diorganozinc reagents proceeds via a decarbonylative process to produce ortho-substituted benzamides in high yields. In addition to tolerating diverse phthalimide functionality, including alkyl, aryl, and heteroatom containing substituents, this methodology proceeds smoothly with diorganozinc reagents prepared from aryl bromides and utilized without purification.
Cobalt-Catalyzed CH Arylations with Weakly-Coordinating Amides and Tetrazoles: Expedient Route to Angiotensin-II-Receptor Blockers
作者:Jie Li、Lutz Ackermann
DOI:10.1002/chem.201500552
日期:2015.4.7
Cobalt‐catalyzed CH arylations enabled the synthesis of biaryl tetrazoles, which are key structural motifs in antihypertensive angiotensin‐II‐receptor blockers. Thus, weakly‐coordinating benzamides were employed for step‐economical CH arylations with ample scope. Further, a low‐valent NHC complex enabled first cobalt‐catalyzed CH functionalization by tetrazole assistance.