Results 21 to 30 of about 899 (191)

Polymer-supported Pd(0) catalyst for copper- and ligand-free Sonogashira reactions in aqueous media

Green Processing and Synthesis, 2012
The treatment of commercially available polymethyl methacrylate (PMMA) microspheres with palladium (Pd)Cl2 and formaldehyde, generated supported Pd(0)-PMMA with 0.79 (wt)% catalyst loading.
Yi Wen-Bin, Shi Xin-Lei, Cai Chun, Zhang Wei   +3 more
doaj   +1 more source

Intramolecular Cooperative Effects in Multichromophoric Cavitands Exhibiting Nonlinear Optical Properties [PDF]

, 2015
We report on the design, synthesis, and characterization of a new class of multichromophoric cavitands based on resorcin[4]arenes. The novel compounds have exhibited high values of second-order nonlinear optical (NLO) properties, as evidenced by electric-
Aparicio F., Botta B., Bruyère E., Bähring S., Böhmer V., Chemla D. S., Chou T.-C., Cram D. J., Csók Z., Csók Z., Csók Z., Dalton L. R., Datta A., Datta A., Delgado M. C. R., Di Bella S., Ercolani G., Gutsche C. D., Hennrich G., Hennrich G., Hoang Minh Ngo, Hunter C. A., Isabelle Ledoux-Rak, Kelderman E., Kelderman E., Kenis P. J. A., Kenis P. J. A., Klamt A., Knorr D. B., Ledoux I., Li Y., László Kollár, Martinez C. R., Mayoral M. J., Meyer E. A., Mitchell R. H., Naidel A. M. S. Caturello, Nalwa H. S., Oudar J. L., Oudar J. L., Painelli A., Painelli A., Prasad P. N., Put E. J. H., Péter Szuroczki, Rekaï E. D., Rodrigo Q. Albuquerque, Ronchi M., Salonen L. M., Schaeffer G., Stewart J. J. P., Terenziani F., Terenziani F., Timmerman P., Zsolt Csók   +54 more
core   +4 more sources

Iterative Synthesis of Pentacene Derivatives with Continuous Boron–Oxygen Bonds

Angewandte Chemie, EarlyView.
An iterative synthetic strategy enables the controlled introduction of continuous multiple B–O bonds at the zigzag edge of acenes. A simple two‐step cycle—ipso iodination and Suzuki cross‐coupling/condensation—efficiently constructs BO‐acenes ranging from naphthalene to pentacene.
Seonghwa Jeong, Si‐In Kim, Jonghwan Lee, Hwon Kim, Jinuk Jang, Jiyeon Kim, Wonyoung Choe, Seung Kyu Min, Young S. Park   +8 more
wiley   +2 more sources

Transmembrane anion transport mediated by halogen-bond donors [PDF]

, 2012
In biology and chemistry, the transport of anions across lipid bilayer membranes is usually achieved by sophisticated supramolecular architectures. Significant size reduction of transporters is hampered by the intrinsically hydrophilic nature of typical ...
A.Vargas Jentzsch, D. Emery, G. Resnati, J. Mareda, N. Sakai, P. Metrangolo, S. K. Nayak, S. Matile   +7 more
core   +2 more sources

Ring‐Opening Arylation of Cyclic Diaryliodoniums via Cyclic Triaryliodanes as Aryne Precursors and Dynamic Aryl Reservoirs

Angewandte Chemie, EarlyView.
Cyclic diaryliodonium salts engage aryl Grignard reagents to trigger a self‐propagating aryne–arylation cycle. Transient cyclic triaryliodanes serve as aryne precursors and dynamic aryl reservoirs, delivering iodine‐capped teraryls with predominant meta‐selectivity. The preserved C─I bond enables outward π‐extension or inward recyclization.
Daichi Ikeshita, Mao Atarashi, Naohiko Yoshikai   +2 more
wiley   +2 more sources

Chirality transfer in metal-­‐catalysed intermolecular addition reactions involving allenes [PDF]

, 2016
Allene chemistry in the presence of transition metal complexes is nowadays a very important topic that underpins many challenges and advances in organic synthesis.
Abe, Alcaide, Aponte, Ariza, Aubert, Bang, Barber, Bates, Bonger, Bras, Brummond, Buchner, Burks, Butler, Cai, Campolo, Cañeque, Chen, Claesson, Cooke, Cozzi, Cui, Curtis-Long, Damiano, Denmark, Deutsch, Doodeman, Dyker, Elsner, Evans, Evans, Ferreira, Fleming, Frantz, Fürstner, Gandon, Hadfield, Harris, Hashmi, Hashmi, Hashmi, Hashmi, Hashmi, Hashmi, Hayashi, Haydl, Hill, Horvath, Hou, Huang, Kalek, Kato, Kinder, Kinderman, Kinjo, Kitagaki, Kokubo, Kong, Koschker, Krause, Lam, Lee, Lee, Li, Li, Li, Li, Li, Lim, Liu, Louvel, Lowe, Lu, Lundgren, López, López, Löhr, Ma, Malacria, Masse, Menggenbateer, Molander, Moss, Muzart, Muñoz, Muñoz, Muñoz, Muñoz, Neff, Neff, Ng, Ng, Nguyen, Nishina, Nishina, Nishina, Nishina, Nishinaa, Ogasawara, Ogasawara, Ogasawara, Ohmura, Ohmura, Oisaki, Onozawa, Oon, Osborne, Osborne, Paton, Pelz, Pritzius, Pu, Pu, Qin, Rodriguez, Roggen, Roth, Sarkar, Sato, Sawano, Shen, Sherry, Shu, Sieber, Soriano, Sugimone, Suginome, Suginome, Suginome, Suresh, Tarselli, Toups, Toups, Toups, Tran, Trost, Trost, Trost, Trost, Vanitcha, Vanitcha, Wang, Wang, Wang, Wang, Wang, Widenhoefer, Woodward, Xu, Xu, Xu, Xu, Xu, Yamada, Yang, Yang, Ye, Ye, Yoshida, Yu, Yu, Zani, Zeng, Zhang, Zhang, Zhang, Zhang, Zhang, Zhao, Zimmer   +169 more
core   +1 more source

Site‐Selective B─H Activation via HAT Toward Xanthyl‐closo‐Carboranes as Bench‐Stable Precursors of Organosulfur Boron Clusters

Angewandte Chemie, EarlyView.
A light mediated direct regioselective B─H functionalization, via hydrogen atom transfer (HAT), is described. Unexplored xanthyl‐closo‐carboranes as novel bench‐stable and versatile platforms to access sulfur‐containing boron clusters are reported for the first time.
Marco Rusconi, Eugenia Magi, Polyssena Renzi, Emanuele Azzi, Valeria Lagostina, Enrico Salvadori, Mario Chiesa, Birgit Hischa, Giovanni Ghigo, Annamaria Deagostino   +9 more
wiley   +2 more sources

Fluorination methods in drug discovery [PDF]

, 2016
Fluorination reactions of medicinal and biologically-active compounds will be discussed. Late stage fluorination strategies of medicinal targets have recently attracted considerable attention on account of the influence that the fluorine atom can impart ...
Bonesi, Sergio Mauricio, Postigo, Jose Alberto, Yerien, Damián Emilio   +2 more
core   +1 more source

1,3-Dien-5-ynes: Versatile Building Blocks for the Synthesis of Carbo- and Heterocycles [PDF]

, 2016
1,3-Dien-5-ynes have been extensively used as starting materials for the synthesis of a wide number of different carbo- and heterocycles. The aim of this review is to give an overview of their utility in organic synthesis, highlighting the variety of ...
Aguilar, Enrique, Fernández Rodríguez, Manuel A., García García, Patricia, Sanz Díez, Roberto   +3 more
core   +1 more source

Advances in Functionalized Ionic Liquids as Reagents and Scavengers in Organic Synthesis [PDF]

, 2014
Functionalized ionic liquids (FILs) synthesized with specific desired chemical properties have shown promising results in various areas of organic synthesis. In supported organic synthesis, FILs have become known as a new alternative to commonly used PEG
Kumar, Anil, Muthyala, Manoj Kumar, Parang, Keykavous, Velisetti, Kavya   +3 more
core   +2 more sources