Results 71 to 80 of about 9,178 (246)
Enantioselective Synthesis of Dialkylated N-Heterocycles by Palladium-Catalyzed Allylic Alkylation [PDF]
, 2015 The enantioselective synthesis of α-disubstituted N-heterocyclic carbonyl compounds has been accomplished using palladium-catalyzed allylic alkylation.
Houk, K. N. +4 more
core +2 more sources
Macromolecular Materials and Engineering, Volume 310, Issue 12, December 2025.This exploratory study investigates the reversible cross‐linking of polyamide 6 by the photolabile cross‐linker 1‐(5‐(Aminoethyl)‐2‐nitrophenyl)ethanol (PXL). The storage modulus of the material increases with increasing PXL content and decreases when the exposure time of the samples is increased.
Florian Puch +4 more
wiley +1 more source
Preparation of diethyl malonate adducts from chalcone analogs containing a thienyl ring
Bulletin of the Chemical Society of Ethiopia, 2010 Nine chalcone-diethyl malonate derivatives (4a-i) were prepared by the reaction of chalcone derivatives (3a-i) with diethyl malonate in the presence of a catalytic amount of KOt-Bu in CH2CI2 in good to excellent yields. The products were characterized by
Yakup Budak +3 more
doaj
Acta Crystallographica Section E: Crystallographic Communications, 2018 The title compound, C18H23FO5, was synthesized by reacting diethyl malonate with 1-(4-fluorophenyl)-3-methylbut-2-en-1-one. The molecule adopts a loose conformation stabilized by weak C—H...O and C—H...π interactions.
Sandeep Chandrashekharappa +4 more
doaj +1 more source
Michael addition of thiols, carbon nucleophiles and amines to dehydroamino acid and dehydropeptide derivatives [PDF]
, 2001 Michael additions of nitrogen heterocycles, thiols, carbon nucleophiles and amines to dehydroalanine derivatives, including a glycyldehydroalanine peptide, were performed in fair to good yields.
Ferreira, Paula M. T. +3 more
core +1 more source
Beilstein Journal of Organic Chemistry, 2014 2-Hydroxy-4-pentynoic acid (1) is a key intermediate towards ‘clickable’ polylactide which allows for efficient introduction of a broad range of pendant functional groups onto polymers from a single monomer via convenient ‘click’ chemistry with organic ...
Quanxuan Zhang +2 more
doaj +1 more source
Nonproductive Events in Ring-Closing Metathesis Using Ruthenium Catalysts [PDF]
, 2010 The relative TONs of productive and nonproductive metathesis reactions of diethyl diallylmalonate are compared for eight different ruthenium-based catalysts. Nonproductive cross metathesis is proposed to involve a chain-carrying ruthenium methylidene.
Grubbs, Robert H. +4 more
core +2 more sources
HeliyonDiethyl 2-(((4-methyl-2-oxo-2H-chromen-7-yl)oxy)methylene)malonate (2) was synthesized from coumarin 1 and diethyl ethoxymethylene malonate in ethanol, followed by cyclization in diphenyl ether to give chromene-9-carboxylate (3).
Kahdr Alatawi +7 more
doaj +1 more source
Stereoselective Synthesis of Complex α‐Amino Acid Derivatives Using Boron and Palladium Chemistry
Zeitschrift für anorganische und allgemeine Chemie, Volume 651, Issue 17, November 25, 2025.Matteson homologation of boronic acid esters allows the highly stereoselective synthesis of complex allyl alcohols, which are valuable substrates for palladium‐catalyzed allylic alkylations. With highly reactive amino acid zinc enolates, trans‐configured γ,δ‐unsaturated amino acid derivatives are obtained as single regioisomer.
Ronja Priester, Uli Kazmaier
wiley +1 more source
Oxidative halogenation of cisplatin and carboplatin: synthesis, spectroscopy, and crystal and molecular structures of Pt(IV) prodrugs [PDF]
, 2014 A series of Pt(IV) prodrugs has been obtained by oxidative halogenation of either cisplatin or carboplatin. Iodobenzene dichloride is a general reagent that cleanly provides prodrugs bearing axial chlorides without the need to prepare intervening Pt(IV ...
Alexander, Sarah M. +3 more
core +1 more source