Results 21 to 30 of about 91,605 (289)

A Simple Nickel Catalyst Enabling an E‐Selective Alkyne Semihydrogenation [PDF]

, 2019
Stereoselective alkyne semihydrogenations are attractive approaches to alkenes, which are key building blocks for synthesis. With regards to the most atom economic reducing agent dihydrogen (H 2 ), only few catalysts for the challenging E ‐selective ...
Kaewmee, Benyapa, Teichert, Johannes F., Thiel, Niklas Olof, Tran Ngoc, Trung   +3 more
core   +1 more source

Nucleophilic and electrophilic cyclization of N-alkyne-substituted pyrrole derivatives: Synthesis of pyrrolopyrazinone, pyrrolotriazinone, and pyrrolooxazinone moieties

Beilstein Journal of Organic Chemistry, 2017
Intramolecular nucleophilic and electrophilic cyclization of N-alkyne-substituted pyrrole esters is described. Efficient routes towards the synthesis of pyrrolopyrazinone, pyrrolotriazinone and pyrrolooxazinone have been developed.
Işıl Yenice, Sinan Basceken, Metin Balci   +2 more
doaj   +1 more source

3-(3-Nitrophenyl)-1-[4-(prop-2-ynyloxy)phenyl]prop-2-en-1-one

IUCrData, 2022
The structure of the title compound, C18H13NO4, shows that the whole molecule is almost planar but with a dihedral angle between the two phenyl rings of 19.22 (5)°.
Vinaya, Yeriyur B. Basavaraju, Holalagudu A. Nagma Banu, Balakrishna Kalluraya, Hemmige S. Yathirajan, Rishik Balerao, Ray J. Butcher   +6 more
doaj   +1 more source

Synthesis and biological evaluation of novel PDMP analogues [PDF]

, 2006
A new series of hybrid PDMP analogues, based both on PDMP and styryl analogues of natural ceramide, has been synthesized from D-serine. The synthetic route was developed such that future introduction of different aryl groups is straightforward ...
Boldin-Adamsky, Swetlana, Busson, Roger, Futerman, Anthony H, Hillaert, Ulrik, Rozenski, Jef, Van Calenbergh, Serge   +5 more
core   +1 more source

Coordinatively unsaturated ruthenium complexes as efficient alkyne-azide cycloaddition catalysts [PDF]

, 2012
The performance of 16-electron ruthenium complexes with the general formula Cp*Ru(L)X (in which L = phosphine or N-heterocyclic carbene ligand; X = Cl or OCH2CF3) was explored in azide−alkyne cycloaddition reactions that afford the 1,2,3- triazole ...
Broggi, Julie, Cavallo, Luigi, Fortman, George C., Lamberti, Marina, Nolan, Steven P., Poater, Albert, Slawin, Alexandra M. Z.   +6 more
core   +2 more sources

Bidentate Lewis Acids Derived from o‐Diethynylbenzene with Group 13 and 14 Functions

ChemistryOpen, 2021
Starting from 1,2‐diethynylbenzene, a series of bidentate Lewis acids was prepared by means of hydrometalations, in particular hydrosilylation, hydroboration, hydroalumination and terminal metalation based on group 13 and 14 elements.
Jens Rudlof, Niklas Aders, Dr. Jan‐Hendrik Lamm, Beate Neumann, Dr. Hans‐Georg Stammler, Prof. Dr. Norbert W. Mitzel   +5 more
doaj   +1 more source

Regioselective and stoichiometrically controlled conjugation of photodynamic sensitizers to a HER2 targeting antibody fragment [PDF]

, 2014
The rapidly increasing interest in the synthesis of antibody–drug conjugates as powerful targeted anticancer agents demonstrates the growing appreciation of the power of antibodies and antibody fragments as highly selective targeting moieties.
Boyle, Ross W., Bryden, Francesca, Caddick, Stephen, Chudasama, Vijay, Maruani, Antoine, Savoie, Huguette, Smith, Mark E. B.   +6 more
core   +1 more source

Orthogonal, metal-free surface modification by strain-promoted azide–alkyne and nitrile oxide–alkene/alkyne cycloadditions [PDF]

, 2012
In this article we present a fast and efficient methodology for biochemical surface patterning under extremely mild conditions. Micropatterned azide/benzaldoxime-surfaces were prepared by microcontact printing of a heterobifunctional cyclooctyne oxime ...
Arlinghaus, Heinrich F, Burley, Glenn A, Ravoo, Bart Jan, Rinnen, Stefan, Schulz, Christian, Singh, Ishwar, Wendeln, Christian   +6 more
core   +1 more source

Reactions of Tetracyclone Molybdenum Complexes with Electrophilic Alkynes: Cyclopentadienone–Alkyne Coupling and Alkyne Coordination [PDF]

Organometallics, 2017
The reactions of the complexes [Mo(CO)2(η4-C4Ph4CO)2] and [Mo(CO)3(NCMe)(η4-C4Ph4CO)] with the alkynes dimethyl acetylenedicarboxylate (DMAD; RC≡CR where R = CO2Me) and methyl propiolate (RC≡CH) have been studied. In the case of DMAD, the initial product is the green carbonyl complex [Mo(CO)(RC≡CR)(η5,σ-C4Ph4COCR═CR)] (3), in which two alkyne molecules
Adams, H., Booth, Y.K., Cook, E.S., Riley, S., Morris, M.J.   +4 more
openaire   +2 more sources

Vanadium (β-(Dimethylamino)ethyl)cyclopentadienyl Complexes with Diphenylacetylene Ligands [PDF]

, 2008
Reduction of the V(III) (β-(dimethylamino)ethyl)cyclopentadienyl dichloride complex [η5:η1-C5H4(CH2)2NMe2]VCl2(PMe3) with 1 equiv of Na/Hg yielded the V(II) dimer {[η5:η1-C5H4(CH2)2NMe2]V(µ-Cl)}2 (2).
Ahmed K. J., Arndt S., Baretta A., Basuli F., Beweries T., Blais M. S., Bradley S., Britovesk G. J. P., Buijink J. K. F., Buijink J.-K. F., de Bruin T. J. M., Deckers P. J. W., Deckers P. J. W., Evans W. J., Fachinetti G., Feghali K., Flores J. C., Flores J. C., Hessen B., Hessen B., Hessen B., Hessen B., Hessen B., Hessen B., Hirpo W., Johnson S. A., Jungst R., Jutzi P., Köhler F. H., Köhler F. H., Liu G. H., Lorber C., Marschner C., Mindiola D. J., Moore M., Nieman J., Nieman J., Nieman J., Rosenthal U., Rosenthal U., Schrock R. R.   +40 more
core   +5 more sources