Imine-Palladacycles as Phosphine-Free Precatalysts for Low-Temperature Suzuki–Miyaura Synthesis of Nucleoside Analogues in Aqueous Media
作者:José Luis Serrano、Luis García、José Pérez、Pedro Lozano、Jevy Correia、Santosh Kori、Anant R. Kapdi、Yogesh S. Sanghvi
DOI:10.1021/acs.organomet.0c00580
日期:2020.12.28
tested, and bridging acetates were cleaved by reaction with neutral PPh3, yielding the corresponding mononuclear derivatives [Pd(R-C^N-SO3Na)(AcO)(PPh3)] (R = H (4), MeO (5), Cl (6)). Analytical and spectroscopic techniques confirmed the proposed formulas and reactivities reported for complexes 1–6. Structuralcharacterization by X-ray diffraction of single crystals grown from samples of 4 and 6 produced
Novel water-soluble phosphatriazenes: versatile ligands for Suzuki–Miyaura, Sonogashira and Heck reactions of nucleosides
作者:Shatrughn Bhilare、Vijay Gayakhe、Ajaykumar V. Ardhapure、Yogesh S. Sanghvi、Carola Schulzke、Yulia Borozdina、Anant R. Kapdi
DOI:10.1039/c6ra19039a
日期:——
complexation reactions with Pd(OAc)2 and utilized for catalyzing column-free Suzuki–Miyaura cross-coupling of various purine and pyrimidine halonucleosides in water. The water-solubility of the catalyticsystem simplified the isolation of the cross-coupled products to mere filtration, while the catalytically active solution in the filtrate was recycled eight times. A novel copper-free Sonogashira coupling
Hassan, Mohamed E., Collection of Czechoslovak Chemical Communications, 1991, vol. 56, # 6, p. 1295 - 1299
作者:Hassan, Mohamed E.
DOI:——
日期:——
HASSAN, MOHAMED E., COLLECT. CZECHOSL. CHEM. COMMUN., 56,(1991) N, C. 1295-1299
作者:HASSAN, MOHAMED E.
DOI:——
日期:——
Water-Soluble Pd–Imidate Complexes: Broadly Applicable Catalysts for the Synthesis of Chemically Modified Nucleosides via Pd-Catalyzed Cross-Coupling
作者:Vijay Gayakhe、Ajaykumar Ardhapure、Anant R. Kapdi、Yogesh S. Sanghvi、Jose Luis Serrano、Luis García、Jose Pérez、Joaquím García、Gregorio Sánchez、Christian Fischer、Carola Schulzke
DOI:10.1021/acs.joc.5b02475
日期:2016.4.1
A broadly applicable catalyst system consisting of water-soluble Pd–imidate complexes has been enployed for the Suzuki–Miyaura cross-coupling of four different nucleosides in water under mild conditions. The efficient nature of the catalyst system also allowed its application in developing a microwave-assisted protocol with the purpose of expediting the catalytic reaction. Preliminary mechanistic studies