Results 131 to 140 of about 18,411 (287)
Angewandte Chemie, EarlyView.Sun et al. proposed an axial boron coordination strategy to reconstruct the stereostructure of Cu SAzymes and enable them to serve as efficient laccase mimics for high‐throughput smart sensor array detection of phenolic pollutants in water phases. ABSTRACT Developing single‐atom nanozymes with stereoconfigurations is a new paradigm for biomimetic ...
Qijun Sun +8 more
wiley +2 more sources
Nitrogen Radical Photocatalysed Reduction of Nitrous Oxide
Angewandte Chemie, EarlyView.This work offers the first example of reduction of the potent greenhouse gas N2O to the benign products N2 and O(Bpin)2 using a nitrogen‐based catalyst. The active catalyst is shown to be a nitrogen‐based radical which operates under photocatalytic conditions.
Reece Lister‐Roberts +2 more
wiley +2 more sources
Preparation and functionalization of regioselectively substituted pyrroles/
, 1993 The reaction of 1-substituted vinamidinium salts with sarcosine ethyl ester produced 2,3-disubstituted pyrroles; a similar reaction with glycine ethyl ester gave 2,5-disubstituted pyrroles.
Smith, Lana L.
core
Selective synthesis of functionalized pyrroles from 3-aza-1,5-enynes
, 2016 2-Trifluoromethyl-5-(arylsulfonyl)methyl pyrroles and 2-trifluoromethyl-4-(arylsulfonyl) methyl pyrroles were selectively synthesized from trifluoromethyl-substituted 3-aza-1,5-enynes via a cyclization/sulfonyl group migration cascade catalyzed by ...
Wan, Boshun +5 more
core +1 more source
Katalytischer Schwefelatomtransfer vermittelt durch einen Bis(disulfido)‐Titankomplex
Angewandte Chemie, EarlyView.Mehrelektronentransformationen mit Titan sind aufgrund der limitierten Zugänglichkeit niedervalenter Vorstufen bislang nur unzureichend untersucht. Die Vier‐Elektronen‐Aktivierung von elementarem Schwefel durch einen Ti(IV)‐Komplex führt zu einem seltenen Bis(disulfido)‐Titankomplex, der die effiziente katalytische Synthese von Isothiocyanaten aus ...
Sebastian Samir Cremer +3 more
wiley +1 more source
Angewandte Chemie, EarlyView.The first nitrile reductive couplings beyond stoichiometric metals or metalloids are described. Using a ruthenium catalyst derived from RuHCl(CO)(PPh3)3 and Cy‐BIPHEP, 2‐propanol‐mediated reductive coupling of phenyl acrylate with aromatic or aliphatic nitriles delivers α,β‐unsaturated β‐amino esters.
Sebastian Höthker +3 more
wiley +2 more sources
Rhodium-Catalyzed Conversion of Furans to Highly Functionalized Pyrroles
, 2016 The synthesis of highly functionalized pyrroles has been achieved by reaction of rhodium-stabilized imino-carbenes with furans. The reaction features an initial [3+2] annulation to form bicyclic hemiaminals, followed by ring opening to generate ...
Samantha A. Green (1977208) +2 more
core +1 more source
Catalytic Asymmetric Hydrogenation of 2,3,5-Trisubstituted Pyrroles
, 2016 Catalytic asymmetric hydrogenation of N-Boc-protected pyrroles proceeded with high enantioselectivity by using a ruthenium catalyst modified with a trans-chelating chiral bisphosphine PhTRAP.
Masato Ohsumi (2458024) +3 more
core +1 more source
, 2014 An efficient gold(I)-catalyzed alkenylation of beta-alkyne-substituted pyrroles is reported. The intramolecular reaction gives straightforward access to different types of seven-membered-ring-fused pyrroles with endo-selectivity, and the intermolecular ...
Wu, Fan +5 more
core +1 more source
, 2010 Methyl 2-(2-benzoylphenylamino)-2-oxoacetate and dimethyl 2,2′-(4,4′-methylenebis(4,1- phenylene)bis(azanediyl)) bis(2-oxoacetate) undergo a smooth reaction with triphenylphosphine and dialkyl acetylenedicarboxylates to produce corresponding highly ...
Ali Reza Dadrass +2 more
core +1 more source