Results 71 to 80 of about 105,486 (290)

Asymmetric carbohydroxylation of alkenes via sequential photocatalytic oxo-alkylation and enzymatic reduction

Tetrahedron Chem
Asymmetric carbohydroxylation of alkenes offers an efficient approach to access chiral alcohols, a class of versatile building blocks in pharmaceutical and agrochemical industries, from abundant simple alkenes.
Yiyin Liu, Kun Zhu, Xuemei Li, Xiaoyun Wu, Jinhui Feng, Atefeh Roosta, Qiaqing Wu, Dunming Zhu   +7 more
doaj   +1 more source

High chemoselectivity in the phenol synthesis

Beilstein Journal of Organic Chemistry, 2011
Efforts to trap early intermediates of the gold-catalyzed phenol synthesis failed. Neither inter- nor intramolecularly offered vinyl groups, ketones or alcohols were able to intercept the gold carbenoid species. This indicates that the competing steps of
Matthias Rudolph, Melissa Q. McCreery, Wolfgang Frey, A. Stephen K. Hashmi   +3 more
doaj   +1 more source

The catalytic oxidation of organic contaminants in a packed bed reactor [PDF]

, 1994
The catalytic oxidation of several hydrocarbons was studied over noble metal and metal oxide catalysts. A fast empirical method was developed to determine the minimum operating temperature required to guarantee complete conversion of the hydrocarbon.\ud \
Beld, L. van de, Bijl, M.P.G., Reinders, A., Wert, B. van der, Westerterp, K.R.   +4 more
core   +4 more sources

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Anomere Amide Ermöglichen Aminative Alken‐Aryl‐ und Alken‐Alken‐Kupplungen

Angewandte Chemie
AbstractTrotz der Bedeutung von Kreuzkupplungsreaktionen, bei denen C−N‐Bindungen gebildet werden, stellen aminative Kupplungsansätze, bei denen zwei Fragmente direkt am Heteroatom verknüpft werden, eine selten genutzte retrosynthetische Strategie für den molekularen Aufbau dar.
Colin Stein, Jasper L. Tyler, Julius Wiener, Florian Boser, Constantin G. Daniliuc, Frank Glorius   +5 more
openaire   +1 more source

Synthetic chemistry and biological activity of pentafluorosulphanyl (SF5) organic molecules [PDF]

, 2012
Acknowledgements We thank the European Commission for financial support (Industry Academia Partnerships and Pathways project “PET BRAIN”, Contract No 251482). S.A.
Altomonte, Stefano, Zanda, Matteo
core   +1 more source

In Situ Amine Formation to Modulate MOF‐Derived PdIn N‐Doped Carbon Catalysts

Advanced Materials, EarlyView.
An amine‐assisted approach converts PdIn‐MOF into PdIn intermetallic nanoparticles embedded in N‐doped carbon. In situ‐generated amines trigger early Pd nucleation, producing smaller PdIn domains than direct pyrolysis. Amine sterics and basicity tune composition and particle size, while solvent and amine co‐determine textural features.
Gonzalo Egea, Jordan Santiago Martinez, M. Asunción Molina, Jaime Mazarío, Lucy Costley‐Wood, Christian Cerezo‐Navarrete, Carlo Marini, Eduardo Villalobos‐Portillo, Andrew M. Beale, Pascual Oña‐Burgos   +9 more
wiley   +1 more source

Pig Slurry Fertilization Changes the Pyrolytic Signature of Humic Substances in Calcareous Soil

Agronomy
The aim of this study was to determine the effect of progressive pig slurry (PS) rates, applied over a 12-year period, on the molecular composition of soil organic matter in a calcareous soil.
Àngela D. Bosch-Serra, Diana E. Jiménez-de-Santiago, José A. González-Pérez, Gonzalo Almendros   +3 more
doaj   +1 more source

Inter- and intramolecular enantioselective carbolithiation reactions

Beilstein Journal of Organic Chemistry, 2013
In this review we summarize recent developments in inter- and intramolecular enantioselective carbolithiation reactions carried out in the presence of a chiral ligand for lithium, such as (−)-sparteine, to promote facial selection on a C=C bond.
Asier Gómez-SanJuan, Nuria Sotomayor, Esther Lete   +2 more
doaj   +1 more source

Hydrosilylation of 1-alkenes with dichlorosilane [PDF]

, 1995
Symmetrically and unsymmetrically substituted diorganodichlorosilanes have been prepared by hydrosilylation with dichlorosilane using two different platinum catalysts, i.e., hexachloroplatinic acid (Speier's catalyst) and a platinum ...
Frey, Holger, Klok, Harm-Anton, Möller, Martin, Out, Gerardus J.J., Schwegler, Leonore   +4 more
core   +4 more sources