Results 91 to 100 of about 18,579 (227)
Katalytischer Schwefelatomtransfer vermittelt durch einen Bis(disulfido)‐Titankomplex
Angewandte Chemie, Volume 138, Issue 39, 21 September 2026.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
, 2014 A simple and efficient, Lewis acid catalysed reductive etherification strategy for the stereoselective synthesis of cis-2,6-disubstituted morpholines and 1,4-oxathianes starting from readily available 1,5-diketones has been developed.
Gharpure, Santosh J. +3 more
core +1 more source
Angewandte Chemie, Volume 138, Issue 38, 14 September 2026.A stereoselective functionalization method of cyclic imines under mild organocatalytic conditions was developed. Bifunctional cinchona alkaloid catalysts combined with carefully optimized reaction conditions to suppress background reactivity enabled highly enantio‐ and diastereoselective addition reactions of malonates to cyclic imines.
Frederic Kölblin, Helma Wennemers
wiley +2 more sources
, 2010 A novel, straightforward synthesis of enantiomerically pure 2,6-disubstituted morpholines e. g., I has been developed. The ring-opening of epoxides with TsNHBoc under solid-liq.
Landini Dario +4 more
core
, 2016 Diastereoselective trans-2,5-disubstituted amino acids derived diverse morpholines, piperazines and thiomorpholines were prepared in 30 min-1 h with high yields through iodine-mediated 6-exotrig type cyclization from a single common synthetic ...
Saurav Bera (2129953) +1 more
core +1 more source
Catalytic Sulfur‐Atom Transfer Enabled by a Bis(disulfide) Titanium Complex
Angewandte Chemie International Edition, Volume 65, Issue 39, 21 September 2026.Multi‐electron transformations with titanium are underexplored due to limited access to low‐valent precursors. The four‐electron activation of elemental sulfur by a Ti(IV) complex yields a rare titanium bis(disulfide) complex, enabling the efficient catalytic synthesis of isothiocyanates from isonitriles under mild conditions.
Sebastian Samir Cremer +3 more
wiley +1 more source
Nucleophilic Trifluoromethoxylation of Acyl Chlorides: A Direct Route to Trifluoromethyl Esters
Advanced Synthesis &Catalysis, Volume 368, Issue 18, 19 September 2026.A new method for the synthesis of the underexplored trifluoromethyl carboxylic esters using acyl chlorides as readily available feedstocks and in situ‐generated AgOCF3 from silver fluoride and the trifluoromethyl para‐toluenesulfonate has been designed. The reaction works on a large variety of aromatic and aliphatic acyl chlorides, while minimizing the
Xavier Bertrand +3 more
wiley +1 more source
Organelle‐Resolved Tetrazine‐trans‐Cyclooctene Click Chemistry for Cargo Delivery and Release
Chemistry – A European Journal, Volume 32, Issue 35, 19 September 2026.Bioorthogonal click chemistry tools provide a means for specific intracellular conjugation of molecules. In this study, we used reactive tetrazine (Tz) and TCO moieties for labeling of organelles and organelle‐specific delivery and activation of doxorubicin prodrugs.
Oleh Durydivka +6 more
wiley +1 more source
Titanium‐Catalyzed Diastereoselective Keto‐ and Iminonitrile Cyclizations
Chemistry – A European Journal, Volume 32, Issue 35, 19 September 2026.The titanium(III)‐catalyzed diastereoselective cyclization of readily‐available substituted ketonitriles gives cyclopentanones in good yield and stereoselectivity. Subsequent 1,2‐addition allows the preparation of cyclopentyls with three consecutive stereocenters.
Christoph Kern +4 more
wiley +1 more source