نتایج جستجو برای: nibr2

تعداد نتایج: 28  

Journal: :Inorganica Chimica Acta 2022

Complexes [Pd{(S)-NHCMes,R}2] (R = Me, 2a; iPr, 2b; iBu, 2c) and [Pd{(R)-NHCMes,Me}2] (2a’) were prepared by reaction of the corresponding imidazolium precursor [ImMes,R] (namely (S)–2-alkyl(3-mesityl-1H-imidazol-3-ium-1-yl)acetate, 1a-c, (R)-2-methyl(3-mesityl-1H-imidazol-3-ium-1-yl)acetate, 1a’), with Ag2O subsequent interaction Pd(OAc)2, under appropriate conditions. Alternatively, complexes...

2005
Elena. E. Sheina Mihaela C. Iovu Richard D. McCullough

Introduction Polythiophenes (PTs) continue to be one of the most versatile and extensively studied conjugated polymer systems due to their exceptional spectroscopic and electronic properties, and the ease of synthesis of PTs derivatives. Practical and potential applications of PT derivatives include rechargeable battery, electrochromic devices (ECDs) (e.g., poly(alkylenedioxythiophene) [PXDOT])...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه پلیمر و پتروشیمی ایران - پژوهشکده پتروشیمی 1393

چکیده واکنش ایمیدیل کلراید (imc1) با lithium ?-diketimine li-bdk) ( منجر به تشکیل لیگاندtriketimine - (l1) ?که معرف گروه جدیدی از لیگاندهای سه دندانه ای خنثی (n,n,n) می باشد، می گردد. روش سنتز این دسته از لیگاندها به گونه ای است که امکان ایجاد تنوع فراوانی در استخلاف های حلقه های آریل و در نتیجه کنترل ممانعت فضایی اطراف لیگاند را مهیا می سازد. در حالت محلول تعادلی بین ایزومر?-triketimine و تو...

Journal: :Advanced Synthesis & Catalysis 2023

The introduction of a methyl group and its 13C 2H labeled analogs on Csp2-centers remains challenging issue in synthetic chemistry. While the photoredox/Ni dual catalysis has proven to constitute valuable methodology for forging Csp2?Csp3 bonds, high difficulty generate radical control reactivity severely limited development reliable processes. Herein, we introduce easily prepared bench-stable ...

Journal: :CCS Chemistry 2022

Open AccessCCS ChemistryMINI REVIEW1 Jan 2022Nickel-Catalyzed Reductive Cross-Couplings: New Opportunities for Carbon–Carbon Bond Formations through Photochemistry and Electrochemistry Liang Yi†, Tengfei Ji†, Kun-Quan Chen, Xiang-Yu Chen Magnus Rueping Yi† Institute of Organic Chemistry, RWTH Aachen University, 52074 †L. Yi T. Ji contributed equally to this work.Google Scholar More articles by ...

Journal: :Chem 2021

•A Ni-catalyzed regime for reductive alkylalkynylation of alkynes is described•Readily accessible N-(acyloxy)phthalimides are used as alkyl group donors•Stereodefined 1,3-enynes bearing diverse functional groups can be generated•The method amenable to cascade annulation transformations Despite key advances in multicomponent dicarbofunctionalization, additions remain limited, and examples involv...

Journal: :Chem 2021

•Novel strategy for enantioselective remote hydrofunctionalization•Two simple ligands are better than a complex one: simplification of chiral ligand design•Formal asymmetric C(sp3)–H arylation•Practical, mild, and scalable process, excellent regio- enantioselectivities Selective functionalization aliphatic C–H bonds in fashion is synthetically valuable but challenging process. Enantioselective ...

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