An efficient and new protocol for phosphine-free Suzuki coupling reaction using palladium-encapsulated and air-stable MIDA boronates in an aqueous medium
作者:Joaquim Fernando Mendes da Silva、Andres Felipe Yepes Perez、Natália Pinto de Almeida
DOI:10.1039/c4ra03586k
日期:——
A simple methodology for Suzuki–Miyaura cross-coupling reactions using microencapsulated palladium and (het)aryl MIDA boronates in water–alcohol under phosphine-free conditions was developed.
Phosphine-Free Suzuki Cross-Coupling Reaction Using an Efficient and Reusable Pd Catalyst in an Aqueous Medium Under Microwave Irradiation
作者:Joaquim F. M. da Silva、Andres F. Yepes Perez、Natália P. de Almeida
DOI:10.1080/00397911.2015.1057289
日期:2015.9.2
Abstract We report here an improved, highly efficient, and general method for the ligand-free Suzuki cross-couplingreaction to the synthesis of biaryls, bipyridyls, thienylpyridine, and allylphenols. Microwaveirradiation of (het)aryl halides and (hetaryl, allyl)arylboronic acid N-methyl-iminodiacetic acid (MIDA) ester, using polyurea microencapsulated palladium catalyst (Pd EnCat 30), gave the coupling
Aerobic ligand-free Suzuki coupling catalyzed by in situ-generated palladium nanoparticles in water
作者:Debasree Saha、Kalicharan Chattopadhyay、Brindaban C. Ranu
DOI:10.1016/j.tetlet.2008.12.063
日期:2009.3
efficient procedure for Suzukicoupling of aryl bromides/iodides with aryl- and alkylboronicacids catalyzed by in situ-generated palladium(0) nanoparticles in water without any ligand in open air to produce a variety of functionalized biaryls and alkyl-aryls has been developed. The boronic acids act here as the reducing agent for the formation of Pd nanoparticles. The reactions are remarkably fast (5 min)
Cyclometalated Pd(<scp>ii</scp>) and Ir(<scp>iii</scp>) 2-(4-bromophenyl)pyridine complexes with N-heterocyclic carbenes (NHCs) and acetylacetonate (acac): synthesis, structures, luminescent properties and application in one-pot oxidation/Suzuki coupling of aryl chlorides containing hydroxymethyl
作者:Chen Xu、Hong-Mei Li、Zhi-Qiang Xiao、Zhi-Qiang Wang、Si-Fu Tang、Bao-Ming Ji、Xin-Qi Hao、Mao-Ping Song
DOI:10.1039/c4dt00833b
日期:——
2-(4-bromophenyl)pyridine (bpp) complexes [Pd(bpp)(NHC)Cl] 1–3, [Pd(bpp)(acac)] 4, cyclometalated iridium(III) complexes [Ir(bpp)2Cl]25 and [Ir(bpp)2(acac)] 6 have been synthesized and characterized. Their detailed structures have been determined by X-ray diffraction and many intermolecularC–H⋯X (Cl, Br, π) and π⋯π interactions were found in their crystals. Cyclometalatedcomplexes 1–4 and 6 exhibit luminescence
Atom-economic threefold cross-couplings of triarylbismuth reagents with 2-halobenzaldehydes and pot-economic in situ Wittig functionalizations with phosphonium salts
作者:Maddali L. N. Rao、Ritesh J. Dhanorkar
DOI:10.1039/c4ra13348j
日期:——
In this paper we report an efficient pot-economic methodology for the synthesis of ortho-olefinated biaryls. This has been achieved through an atom-economic threefold cross-coupling of triarylbismuth reagents with 2-halobenzaldehydes followed by pot-economic in situ Wittig olefination. The overall process is a pot-economic straightforward synthesis of ortho-olefinated biaryls from 2-halobenzaldehydes, triarylbismuth reagents and phosphonium salts. This pot-economic approach was applied to the formal synthesis of medicinally important Eupomatilone-6.