Reductive Cross-Coupling of Nonaromatic, Heterocyclic Bromides with Aryl and Heteroaryl Bromides
作者:Gary A. Molander、Kaitlin M. Traister、Brian T. O’Neill
DOI:10.1021/jo500905m
日期:2014.6.20
Reductive cross-coupling allows the directC–Cbond formation between two organic halideswithout the need for preformation of an organometallic reagent. A method has been developed for the reductive cross-coupling of nonaromatic, heterocyclic bromides with aryl or heteroaryl bromides. The developed conditions use an air-stable Ni(II) source in the presence of a diamine ligand and a metal reductant
Ru/Ni Dual Catalytic Desulfinative Photoredox C<sub>sp<sup>2</sup></sub>–C<sub>sp<sup>3</sup></sub> Cross-Coupling of Alkyl Sulfinate Salts and Aryl Halides
作者:Thomas Knauber、Ramalakshmi Chandrasekaran、Joseph W. Tucker、Jinshan Michael Chen、Matthew Reese、Danica A. Rankic、Neal Sach、Christopher Helal
DOI:10.1021/acs.orglett.7b03280
日期:2017.12.15
reaction of alkyl sulfinate salts with aryl halides has been developed. The optimized catalyst system, consisting of Ru(bpy)3Cl2, Ni(COD)2, and DBU, smoothly mediates the coupling of a diverse set of secondary and primary nonactivated alkyl sulfinate salts with a broad range of electron-deficient aryl bromides, electron-rich aryl iodides, and heteroaryl bromides under irradiation with blue light. The procedure
Silyl Radical Activation of Alkyl Halides in Metallaphotoredox Catalysis: A Unique Pathway for Cross-Electrophile Coupling
作者:Patricia Zhang、Chi “Chip” Le、David W. C. MacMillan
DOI:10.1021/jacs.6b04818
日期:2016.7.6
merger of photoredox and transition metal catalysis. In this report, we demonstrate the use of commercially available tris(trimethylsilyl)silane with metallaphotoredox catalysis to efficiently couple alkyl bromides with aryl or heteroaryl bromides in excellent yields. We hypothesize that a photocatalytically generated silyl radical species can perform halogen-atom abstraction to activate alkyl halides
NOVEL COMPOUNDS AND COMPOSITIONS FOR THE INHIBITION OF NAMPT
申请人:Bair Kenneth W.
公开号:US20130273034A1
公开(公告)日:2013-10-17
The present invention relates to compounds and compositions for the inhibition of NAMPT, their synthesis, applications and antidotes. An illustrative compound of the invention is shown below:
A Versatile Route to Unstable Diazo Compounds via Oxadiazolines and their Use in Aryl-Alkyl Cross-Coupling Reactions
作者:Andreas Greb、Jian-Siang Poh、Stephanie Greed、Claudio Battilocchio、Patrick Pasau、David C. Blakemore、Steven V. Ley
DOI:10.1002/anie.201710445
日期:2017.12.22
Coupling of readily available boronicacids and diazo compounds has emerged recently as a powerful metal-free carbon-carbon bond forming method. However, the difficulty in forming the unstable diazo compound partner in a mild fashion has hitherto limited their general use and the scope of the transformation. Here, we report the application of oxadiazolines as precursors for the generation of an unstable