Results 341 to 350 of about 187,817 (376)

Microemulsions with Alkyldimethyl Phosphine Oxides and Alkyldiethyl Phosphine Oxides

Langmuir, 2008
Alkyldimethyl phosphine oxides (C n DMPO) as well as alkyldiethyl phosphine oxides (C n DEPO) with chain lengths of n = 10 (decyl), 12 (dodecyl), and 14 (tetradecyl) were synthesized and purified to study how the formation of microemulsions depends on the size of the headgroup and on the length of the alkyl chain.
Reinhard Strey, Renate Tessendorf, Cosima Stubenrauch   +2 more
openaire   +3 more sources

New Approaches for Biaryl-Based Phosphine Ligand Synthesis via P═O Directed C-H Functionalizations.

Accounts of Chemical Research, 2017
Given the important influence of phosphine ligands in transition metal-catalyzed reactions, chemists have searched for straightforward and efficient methodologies for the synthesis of diverse phosphine ligands. Although significant progress has been made
Yan-Na Ma, Shi-xia Li, Shangdong Yang
semanticscholar   +1 more source

Phosphine oxide-based tricarbonylrhenium(i) complexes from phosphine/phosphine oxide and dihydroxybenzoquinones

Dalton Transactions, 2018
Visible light absorbing PO donor-based organometallic complexes were assembled from PR3/OPR3, dihydroxybenzoquinone and Re2(CO)10.
Ramar Arumugam, Bhaskaran Shankar, Ramasamy Shanmugam, T. Arumuganathan, Malaichamy Sathiyendiran   +4 more
openaire   +3 more sources

Ruthenium(II)-Catalyzed meta C-H Mono- and Difluoromethylations by Phosphine/Carboxylate Cooperation.

Angewandte Chemie, 2017
Ruthenium(II)-catalyzed meta-selective C-H (di)fluoromethylation was accomplished by phosphine and carboxylate cooperation. The remote C-H functionalization was characterized by ample substrate scope, thereby setting the stage for meta-(di ...
Zhixiong Ruan, Shouhui Zhang, Cuiju Zhu, P. Ruth, D. Stalke, L. Ackermann   +5 more
semanticscholar   +1 more source

Phosphines and Phosphonium Salts

ChemInform, 1987
AbstractFor Abstract see ChemInform Abstract in Full Text.
openaire   +2 more sources

Mild Reduction of Phosphine Oxides with Phosphites To Access Phosphines

Angewandte Chemie International Edition, 2017
AbstractA new method for the iodine‐catalyzed reduction of phosphine oxides with phosphites at room temperature is reported. The mild reaction conditions, scalability, and simple purification requirements render it a method of choice for the large‐scale production and facile regeneration of a variety of phosphines. Mechanistic studies, supported by DFT
Peng Li, Raphael Wischert, Pascal Métivier   +2 more
openaire   +3 more sources

Enantioselective Phosphine-Catalyzed Formal [4+4] Annulation of α,β-Unsaturated Imines and Allene Ketones: Construction of Eight-Membered Rings.

Angewandte Chemie, 2017
The first highly enantioselective phosphine-catalyzed formal [4+4] annulation has been developed. In the presence of amino-acid-derived phosphines, the unprecedented [4+4] annulations between benzofuran/indole-derived α,β-unsaturated imines and allene ...
Huanzhen Ni, Xiaodong Tang, Wenrui Zheng, W. Yao, N. Ullah, Yixin Lu   +5 more
semanticscholar   +1 more source

The preparation of phosphinic chlorides from phosphinic amides

Journal of the Chemical Society, Perkin Transactions 1, 1972
Phosphinic and phosphinothioic amides react with hydrogen chloride in a suitable inert solvent at room temperature to give high yields of the corresponding phosphinic or phosphinothioic chlorides.
K. Ellis, S. Trippett, D. J. H. Smith
openaire   +2 more sources

Bidentate Phosphine-Assisted Synthesis of an All-Alkynyl-Protected Ag74 Nanocluster.

Journal of the American Chemical Society, 2017
Determining the total structure of metal nanoparticles is vital to understand their properties. In this work, the first all-alkynyl-protected Ag nanocluster, Ag74(C≡CPh)44, was synthesized and structurally characterized by single crystal diffraction.
Mei Qu, Huan Li, Linhua Xie, Shu Yan, Jianrong Li, Jun-Hao Wang, Cai Wei, Yu-Wei Wu, Xian‐Ming Zhang   +8 more
semanticscholar   +1 more source

Phosphine-Catalyzed Asymmetric Intermolecular Cross-Vinylogous Rauhut–Currier Reactions of Vinyl Ketones with para-Quinone Methides

, 2017
A chiral amide-phosphine bifunctional catalyst was developed and successfully applied to the asymmetric intermolecular cross-vinylogous Rauhut–Currier of alkyl vinyl ketones with para-quinone methides, offering excellent regioselectivity and ...
Shen Li, Yuanyuan Liu, Ben Huang, Tao Zhou, H. Tao, Yuanjing Xiao, Lu Liu, Junliang Zhang   +7 more
semanticscholar   +1 more source