Results 31 to 40 of about 906 (153)

Triorganotin(IV) derivatives of 7-amino-2-(methylthio)[1,2,4]triazolo [1,5-a]pyrimidine-6-carboxylic acid. Synthesis, spectroscopic characterization, in vitro antimicrobial activity and X-ray crystallography [PDF]

, 2010
Triorganotin(IV) complexes of the 7-amino-2-(methylthio)[1,2,4]triazolo[1,5-a]pyrimidine-6-carboxylic acid (HL), Me3SnL(H2O), (1), [n-Bu3SnL]2(H2O), (2), Ph3SnL(MeOH), (3), were synthesized by reacting the amino acid with organotin(IV) hydroxides or ...
Bruno, G, CANFORA, Loredana, Debbia, EA, GIRASOLO, Maria Assunta, Mastropietro, TF, MEGNA, Bartolomeo, Rotondo, A, RUISI, Giuseppe   +7 more
core   +1 more source

Synthesis of substituted tetrahydroisoquinolines by lithiation then electrophilic quench [PDF]

, 2016
Substituted N-tert-butoxycarbonyl (Boc)-1,2,3,4-tetrahydroisoquinolines were prepared and treated with n-butyllithium in THF at −50 °C to test the scope of the metallation and electrophilic quench.
Coldham, I., Duperray, A., Li, X., Talk, R.A.   +3 more
core   +1 more source

Apoptosis and cell growth arrest in A375 human melanoma cells by diorganotin(IV) and triorganotin(IV) complexes of [meso-Tetra(4-sulfonatophenyl)porphine]manganese(III)chloride [PDF]

, 2011
In previous studies we have demonstrated that two derivatives of meso-Tetra(4-sulfonatophenyl)porphine (TPPS), (Bu2Sn)2TPPS and (Bu3Sn)4TPPS, cause apoptotic death of A375 melanoma cells and, at lower concentrations, arrest of cell proliferation.
Barbieri, G., Costa, MA, EMMA, Maria Rita, FIORE, Tiziana, PELLERITO, Claudia, PELLERITO, Lorenzo, Zito, F   +6 more
core   +1 more source

New organotin(IV) complexes with L-Arginine,Nα-t-Boc-L-Arginine and L-Alanyl-L-Arginine.Synthesis, structural investigations and cytotoxic activity [PDF]

, 2010
Novel diorganotin(IV) derivatives of L-Arginine (HArg), Nα-(tert-Butoxycarbonyl)-L-Arginine (Boc-Arg-OH) and L-Ala-L-Arg (H2Ala-Arg), H2NC(=NH)NH(CH2)3CH(NHR)CO2H, where R = H in HArg, R = C(O)OC(CH3)3 in Boc-Arg-OH, R = H2NCH(CH3)CO in H2Ala-Arg and ...
CALVARUSO, Giuseppe, GIRASOLO, Maria Assunta, PORTANOVA, Patrizia, RUBINO, Simona, RUISI, Giuseppe, STOCCO, Giancarlo   +5 more
core   +1 more source

Ionic liquids and continuous flow processes: a good marriage to design sustainable processes [PDF]

, 2015
In the last few years the use of Ionic Liquids (ILs) as alternative solvents for (bio)catalytic processes has increased substantially, and the benefits and different approaches reported to combine continuous flow systems and ILs are at the core of this
Altava, Belen, Burguete, M. Isabel, Garcia-Verdugo, Eduardo, Lozano, Pedro, Luis, Santiago V.   +4 more
core   +2 more sources

Reactivity and Steric Parameters from 2D to 3D Bulky Pyridines: Increasing Steric Demand at Nitrogen with Chiral Azatriptycenes

Angewandte Chemie, Volume 136, Issue 32, August 5, 2024.
Highly sterically hindered chiral pyridines were synthesized and resolved by HPLC. Their Brønsted/Lewis basicity were evaluated, and their reactivity was studied through their combination with Pd and B(C6F5)3 to generate new types of ligands/frustrated Lewis pairs. The study involved the first parameterization of the steric hindrance for a large set of
Ali Ben Saida, Damien Mahaut, Nikolay Tumanov, Johan Wouters, Benoît Champagne, Nicolas Vanthuyne, Raphaël Robiette, Guillaume Berionni   +7 more
wiley   +2 more sources

Direct Gas Thickener [PDF]

, 2019
Direct gas thickening technique has been developed to control the gas mobility in the miscible gas injection process for enhanced oil recovery. This technique involves increasing the viscosity of the injected gas by adding chemicals that exhibit good ...
Al Hinai, Nasser Mohammed, Myers, Matthews, Saeedi, Ali, Wood, Colin D.   +3 more
core   +2 more sources

50 Years of Giese Reaction – a Personal View

Angewandte Chemie International Edition, Volume 65, Issue 7, 9 February 2026.
The Giese‐Reaction celebrates its 50. Birthday, it is a cyclic radical chain reaction centered around C,C‐bond formation in a three component synthesis. This minireview speaks about the birth of the name‐reaction, explains how the complete understanding of its reaction mechanism stimulates new methods in organic synthesis, and why it can proceed in ...
Martin Spichty, Hendrik Zipse, Salem Majouri, Katharina M. Fromm, Bernd Giese   +4 more
wiley   +1 more source

Unified Approach to Deamination and Deoxygenation Through Isonitrile Hydrodecyanation: A Combined Experimental and Computational Investigation

Angewandte Chemie, Volume 136, Issue 25, June 17, 2024.
We report a general hydrodefunctionalization protocol using isonitrile intermediates. Employing photoredox catalysis, a nucleophilic boryl radical mediates the scission of a relatively inert C−NC bond, accomplishing deletion of the isonitrile group. This strategy applies to the hydrodefunctionalization of both amine and alcohol‐containing compounds and
Ziqi Jiao, Kyle T. Jaunich, Thomas Tao, Olivia Gottschall, Maxwell M. Hughes, Aneta Turlik, Alexander W. Schuppe   +6 more
wiley   +2 more sources

Recent Developments in Radical Mediated Synthesis of Organostannanes.

Advanced Synthesis &Catalysis, Volume 367, Issue 12, June 26, 2025.
Abstract The present review aims to provide an overview of the recent developments in the preparation of aryl‐ or alkenyl stannanes via carbon‐ and tin‐centered radicals enabling chemists to synthesize organostannyl derivatives with high efficiency and under mild conditions.
Qianhang Ren, Adrian Luguera Ruiz, Maurizio Fagnoni, Stefano Protti, Di Qiu   +4 more
wiley   +1 more source