Results 221 to 230 of about 39,817 (294)

Cu(I)-catalysed chemo-, regio-, and stereoselective radical 1,2-carboalkynylation with two different terminal alkynes. [PDF]

Nat Commun
Bian JQ, Qin L, Fan LW, Fu J, Cheng YF, Zhang YF, Song Q, Wang PF, Li ZL, Gu QS, Yu P, Tang JB, Liu XY.   +12 more
europepmc   +1 more source

Asymmetric Organocatalytic Synthesis of Sulfone‐Containing (Dihydro)pyrans via Formal (4+2)‐Cycloadditions of Allenylsulfones or Propargylsulfones and Michael Acceptors

ChemCatChem, Accepted Article.
The activation of electron poor allenes with Lewis base catalysts allows for unique transformations and chiral isochalcogenoureas were recently introduced as powerful catalysts for allenoate‐based (4+2)‐cycloadditions. We herein now report the use of these catalysts for the activation and control of allenylsulfones and propargylsulfones for asymmetric (
Mario Hofer, Markus Himmelsbach, Uwe Monkowius, Mario Waser   +3 more
wiley   +1 more source

Enantioselective Organocatalytic Conjugate Addition of Malonates to β,β-Disubstituted β-Trifluoromethyl Enones under High Pressure. [PDF]

Org Lett
Połosak AJ, Głowacki MP, Kwiatkowski P.   +2 more
europepmc   +1 more source

Alcohol and Carbonyl Redox Reactions in Electrochemical Organic Synthesis

ChemistryEurope, EarlyView.
This review aims to provide the reader with a useful tool to deal with electrochemical redox reactions involving alcohols and carbonyl compounds. The review is organized in an accessible format and divided into sections that focus on key parameters of wide‐ranging electrosynthetic methods.
Fiammetta Vitulano, Andrea Solida, Letizia Sorti, Carlo F. Morelli, Alessandro Minguzzi, Alberto Vertova   +5 more
wiley   +1 more source

Autoinductive Effects in Zinc‐Catalyzed Alkylations of Benzaldehyde Mediated by Simple Chiral β‐Amino Alcohol Ligands

ChemistryEurope, EarlyView.
The first report on zinc‐catalyzed enantioselective alkylation of aldehydes mediated by a chiral auxiliary is revisited, and the studies show much more complex behavior than previously thought. Studies show an enantiodivergence of the reaction as a function of its progress, due to an autoinduction phenomenon.
Joseph El Khoury, Thibault Thierry, Yannick Geiger, Stéphane Bellemin‐Laponnaz   +3 more
wiley   +1 more source

Chiral ruthenium complex/Ph₂P(2-furyl)-catalyzed asymmetric nucleophilic addition of aryl aldehyde hydrazones to simple ketones. [PDF]

Sci Adv
Zhu C, Ye Z, Wang H, Ma D, Li Z, Li CJ, Zhang J.   +6 more
europepmc   +1 more source

Ligand‐Dependent Chemoselectivity in Gold‐Catalyzed Reactions between Anthranils and Diynamides. Formation of Spiro Azacyclic Compounds versus 1‐Imino‐1H‐Indene‐3‐Carboximidamides

ChemistryEurope, EarlyView.
Gold catalysts direct anthranil/diynamide reactions: PPh3AuCl/AgNTf2 forms spiro azacycles (indole intermediate confirmed), while P(t‐Bu)2(o‐biphenyl)AuCl/AgNTf2 yields indene carboximidamides via a proposed mechanism. Gold‐catalyzed reactions between anthranils and diynamides have been investigated, and their reaction chemoselectivity relies on the ...
Satish Bhausaheb Dawange, Rai‐Shung Liu   +1 more
wiley   +1 more source

Bis-indole chiral architectures for asymmetric catalysis. [PDF]

Nat Commun
Lai J, List B, Reid JP.
europepmc   +1 more source

Indole Synthesis via Allenyl Ester; Enantioselective Total Synthesis of Geissoschizoline

ChemistryEurope, EarlyView.
An indole synthesis via an allenyl ester intermediate at ambient temperature has been developed. The mild reaction conditions allow the use of a broad range of substrates. Notably, the utility of this approach is demonstrated through the asymmetric total synthesis of geissoschizoline, a Strychnos‐type monoterpenoid indole alkaloid.
Sohsuke Moriue, Honami Nishioka, Yuto Fukuda, Hiromitsu Takayama, Mariko Kitajima, Hayato Ishikawa   +5 more
wiley   +1 more source

Copper-catalysed dynamic kinetic asymmetric C-O cross-coupling to access chiral aryl oxime ethers and diaryl ethers. [PDF]

Nat Commun
Zhang MR, Wang HR, Shan HM, Xi LL, Lu CJ, Du XM, Sun C, Xu LP, Liu RR.   +8 more
europepmc   +1 more source