Results 51 to 60 of about 8,721 (248)

An efficient [bmim]oh catalysed the condensations of aromatic aldehydes and diethyl malonate

open access: yesVietnam Journal of Science, Technology and Engineering, 2018
The rapid and green procedure for the Knoevenagel reaction between aromatic aldehydes and diethyl malonate was developed by using 1-butyl-3- methylimidazolium hydroxide, [Bmim]OH, as an efficient catalyst.
Thi Thuy Duy Nguyen, Hoang Phuong Tran
doaj   +1 more source

Order versus disorder in two isomorphous pyrazolone-substituted diethyl propanedioates prepared using a three-component one-pot reaction under solvent-free conditions

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
Two new substituted propanedioate esters have been synthesized using a three-component solvent-free thermal reaction between diethyl propanedioate (diethyl malonate), 5-chloro-3-methyl-1-phenyl-1H-pyrazole-4-carbaldehyde and an aryl azide, forming two ...
Tharangini K. Shreekanth   +4 more
doaj   +1 more source

Nonproductive Events in Ring-Closing Metathesis Using Ruthenium Catalysts [PDF]

open access: yes, 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

Sticky superhydrophobic hard nanofibers from soft matter [PDF]

open access: yes, 2014
Here, we show the possibility to change superhydrophobic properties from soft to hard polymer nanofibers by the control of molecular structure and branching.
Darmanin, Thierry   +4 more
core   +3 more sources

Diethyl 2-(acridin-9-ylmethylene)malonate [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2001
The title compound, C21H19NO4, (II), is an acridine derivative with an angle of 68.30 (2)° between the aromatic ring system and the ethyl­ene moiety. It is remarkable that (II) is isostructural with diethyl 2-(anthracen-9-yl­methyl­ene)­malonate, which bears a C atom at the position where in (II) an N atom is found.
Michael Bolte   +5 more
openaire   +1 more source

Impact of Oxygen and Sulfur Heteroatom Core Substitution on Catalyst Properties of Phenoxazines and Their Performance in Organocatalyzed Atom Transfer Radical Polymerization (O‐ATRP)

open access: yesChemistry – A European Journal, EarlyView.
Phenoxazine core structural modification reveals the impact of charge transfer on stronger excited state reduction potentials. We observed that modifying the core of a photocatalyst that does not exhibit charge transfer yields a highly reducing singlet excited state reduction potential compared to a charge transfer equivalent. Abstract Phenoxazines are
Jessica L. Lathrop   +3 more
wiley   +1 more source

Volatile Profile Characterization of Croatian Commercial Sparkling Wines

open access: yesMolecules, 2020
Commercial sparkling wine production represents a relatively low but important part of the Croatian wine production, especially in the Zagreb county.
Ana-Marija Jagatić Korenika   +3 more
doaj   +1 more source

Synthesis of 3α,12α-dihydroxy-23a, 23b-dihomo-5β-cholan-24-oic acid [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
A novel multi-step synthesis of 3α,12α-dihydroxy-23a,23b-dihomo-5β-cholan 24-oic acid (23a,23b-dihomodeoxycholic acid) (5) has been achieved from methyl 3α,12α-dihydroxy-5β-cholanoate (1).
Ćirin-Novta Vera S.   +3 more
doaj   +1 more source

The degradation of L-lysine in guinea pig liver homogenate: formation of alpha-aminoadipic acid [PDF]

open access: yes, 1948
A summary of the little that is known of the metabolism of lysine in animals is as follows: it is indispensable in the diet, its α-amino group does not participate in reversible transamination reaction in vivo (2), neither the L nor D form is attacked by
Borsook, Henry   +4 more
core   +1 more source

The synthesis and biodistribution of 3‐(4′‐[ 125 I]‐iodophenyl)‐4‐aminobutyric acid, a radioiodinated analogue of baclofen [PDF]

open access: yes, 1990
Baclofen has been found to bind to receptors in the central nervous system that are specific for γ‐aminobutyric acid (GABA), a well known inhibitory neurotransmitter. This paper describes the synthesis of a radioiodinated analog of baclofen as part of an
Allen   +7 more
core   +1 more source

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