Results 21 to 30 of about 4,909 (228)
Enantioselective Synthesis of Succinimides by Michael Addition of 1,3-Dicarbonyl Compounds to Maleimides Catalyzed by a Chiral Bis(2-aminobenzimidazole) Organocatalyst [PDF]
, 2012 A wide variety of chiral succinimides have been prepared in high yields and enantioselectivities by asymmetric conjugate addition of 1,3-dicarbonyl compounds to maleimides under very mild reaction conditions using a bifunctional benzimidazole-derived ...
Alonso, Diego A. +3 more
core +2 more sources
Beilstein Journal of Organic Chemistry, 2012 4-Cyano-1,1'-biphenyl derivatives bearing ω-hydroxyalkyl substituents were reacted with methyl 3-chloro-3-oxopropionate or cyanoacetic acid, giving liquid-crystalline linear malonates and cyanoacetates. These compounds formed monotropic nematic phases at
Katharina C. Kress +4 more
doaj +1 more source
Enantioselective γ-Alkylation of α,β-Unsaturated Malonates and Ketoesters by a Sequential Ir-Catalyzed Asymmetric Allylic Alkylation/Cope Rearrangement [PDF]
, 2016 A catalytic, enantioselective γ-alkylation of α,β-unsaturated malonates and ketoesters is reported. This strategy entails a highly regio- and enantioselective iridium-catalyzed α-alkylation of an extended enolate, and a subsequent translocation of ...
Alexy, Eric J. +5 more
core +4 more sources
Molecules, 2010 A series of new C2-symmetric fluoren-9-ylidene malonate-derived bis(oxazoline) ligands were synthesized from fluoren-9-ylidene malonate and enantiomerically pure amino alcohols via a convenient route.
Lei Liu +3 more
doaj +1 more source
Para-quinone methide: A new player in asymmetric catalysis [PDF]
, 2015 This is the accepted version of the following article: Parra, A. and Tortosa, M. (2015), para-Quinone Methide: a New Player in Asymmetric Catalysis.
Parra, Alejandro +1 more
core +2 more sources
E-Journal of Chemistry, 2011 Morpholinium fluorochromate(VI), MFC, is easily synthesized by reacting morpholine to an aqueous solution of CrO3 and HF. This reagent selectively oxidizes aryl alcohols to their corresponding aldehydes and ketones under mild conditions.
S. Zahra Sayyed-Alangi +3 more
doaj +1 more source
Mechanochemistry Meets Catalysis: Metal Complexes for Greener Organic Transformations
Angewandte Chemie, EarlyView.Mechanochemistry is redefining metal catalysis by controlling catalyst formulation, speciation, and deployment. This Review shows how milling, LAG, RAM, and TSE enable rapid metal‐complex assembly, distinctive catalytic manifolds, and scalable synthesis beyond solution chemistry.
Sourav Behera +2 more
wiley +2 more sources
Charge transport through a single molecule of trans-1-bis-diazofluorene [60]fullerene [PDF]
, 2017 Fullerenes have attracted interest for their possible applications in various electronic, biological, and optoelectronic devices. However, for efficient use in such devices, a suitable anchoring group has to be employed that forms well-defined and stable
Aravena, Daniel +9 more
core +3 more sources
Promiscuity‐Guided Enzyme Evolution via Substrate Multiplexed Screening
Angewandte Chemie, EarlyView.Through historical context and recent examples, this Minireview summarizes the strengths, limitations, and practical considerations for the implementation of substrate multiplexed screening (SUMS) in enzyme evolution. ABSTRACT An enzyme's ability to react with diverse substrates while maintaining high yield and selectivity, termed “substrate ...
Holly A. Weilbaker +3 more
wiley +2 more sources