Ir(III)-Catalyzed Direct C–H Functionalization of Arylphosphine Oxides: A Strategy for MOP-Type Ligands Synthesis
作者:Zhong Liu、Ji-Qiang Wu、Shang-Dong Yang
DOI:10.1021/acs.orglett.7b02710
日期:2017.10.6
efficiently applied to Ir(III)-catalyzed direct C–H functionalization of arylphosphine oxides. Involving C–H activation, carbene insertion, and tautomerism, this reaction proceeds under mild conditions, thus proving an approach to the synthesis of MOP-type ligand precursor in a single step. The utility of this transformation has been further demonstrated in ligand synthesis as well as in the construction
Pd(II)-catalyzed formal O–H insertion reaction of diazonaphthoquinones to aceticacid proceeded to afford 1,2-naphthalenediol monoacetates. In the presence of lithium halides, halonaphthols were ob...
An efficient synthetic method for the synthesis of diazonaphthoquinones from naphthols is described. A variety of diazonaphthoquinones were synthesized from the corresponding naphthols by the diazo transfer with 2-azido-1,3-dimethylimidazolinium chloride prepared by the reaction of 2-chloro-1,3-dimethylimidazorinium chloride and sodium azide.
A metal-catalyzed reaction of α-diazocarbonyl compounds with an acid anhydride is reported. In particular, 1,2-naphthalenediol diacetates were synthesized by the reaction of 1,2-diazonaphthoquinones with acetic anhydride catalyzed by Rh2(OAc)4.
Palladium-catalyzed cross-coupling reactions of 2-diazonaphthoquinones with arylboronic acids
作者:Mitsuru Kitamura、Rie Sakata、Tatsuo Okauchi
DOI:10.1016/j.tetlet.2011.02.047
日期:2011.4
Palladium-catalyzedcross-coupling reactions of 2-diazonaphthoquinones and arylboronicacids proceeded by the treatment with Pd(OAc)2 in acetic acid to afford 2-aryl-1-naphthols.