Insight into Copper Catalysis: In Situ Formed Nano Cu<sub>2</sub>O in Suzuki–Miyaura Cross-Coupling of Aryl/Indolyl Boronates
作者:Ganapathy Ranjani、Rajagopal Nagarajan
DOI:10.1021/acs.orglett.7b01669
日期:2017.8.4
aryl and indole boronates has been explored in good to excellent yields. In situ generation of nano-Cu2O from CuCl2 under the reaction conditions has been discovered for the first time. The generality of the reaction was further demonstrated by the arylation of 5-iodopyrimidine, iodopyridines, iodobenzenes, and diiodobenzenes and resulted in good to moderate yields. Moreover, bisindole alkaloid Scalaridine
Scope and limitation of the nickel-catalyzed coupling reaction between lithium borates and mesylates
作者:Yuichi Kobayashi、Anthony D. William、Ryo Mizojiri
DOI:10.1016/s0022-328x(02)01174-9
日期:2002.7
Coupling reaction of aryl borates and mesylates derived from phenols and enols was studied. Mesylates with an electron-withdrawing group or ring were highly reactive at room temperature in the presence of NiCl2(PPh3)(2) to furnish the coupling products in good yields. (C) 2002 Elsevier Science B.V. All rights reserved.
Diol lipids
作者:S. G. Batrakov、A. G. Panosyan、A. N. Ushakov、B. V. Rozynov、L. D. Bergel'son
DOI:10.1007/bf00923184
日期:1974.8
Zinc Borates: Functionalized Hard Nucleophiles for Coupling Reactions with Secondary Allylic Acetates
In order to find a suitable organometallic compound and a catalyst for the arylation of 8-acetoxyoctalenone 4 (a stereoisomeric mixture of 4 alpha and 4 beta), phenylation was first-investigated with PhZnX (7: X = Cl; 8: X = Br)/Pd or Ni cat., PhSnBu3 (9)/Pd cat. and LiCl, and [PhB(Bu)(OCHMeCHMeO)]Li (10a)/Ni cat. Berate 10a provided the desired product 11a with high stereoselectivity. The stereochemical outcome was irrespective of the stereochemistry of the acetoxy group in 4. Four more aryl groups, p-R-C6H4 (R = Me, MeO, Ph, and Me2N), were installed stereoselectively with this method.