Results 21 to 30 of about 12,453 (230)

Dipeptide analogues of fluorinated aminophosphonic acid sodium salts as moderate competitive inhibitors of cathepsin C

open access: yesBeilstein Journal of Organic Chemistry, 2023
In this paper, we present the solvolysis reaction of dipeptide analogues of fluorinated aminophosphonates with simultaneous quantitative deprotection of the amino group.
Karolina Wątroba   +2 more
doaj   +1 more source

A facile hydrolysis–solvolysis procedure for conjugated bile acid sulfates

open access: yesJournal of Lipid Research, 1977
Methods for hydrolyzing and solvolyzing conjugated bile acid sulfates were compared on reference mixtures of conjugated and unconjugated bile acid sulfates gas–liquid chromatography to assess recovery, and thin-layer chromatography and zonal scanning to ...
G P van Berge-Henegouwen   +3 more
doaj   +1 more source

Acidic Solvolysis of Softwood in Recycled Polyethylene Glycol System

open access: yesBioResources, 2016
The acidic solvolysis of lignocellulose using a glycol solvent such as polyethylene glycol (PEG) is a promising process for separating its components and producing a valuable lignin product that can be used as thermoplastic and fusible materials.
Eri Takata   +4 more
doaj   +1 more source

Evaluating Alternatives to Water as Solvents for Life: The Example of Sulfuric Acid

open access: yesLife, 2021
The chemistry of life requires a solvent, which for life on Earth is water. Several alternative solvents have been suggested, but there is little quantitative analysis of their suitability as solvents for life.
William Bains   +3 more
doaj   +1 more source

The ammonolysis of esters in liquid ammonia [PDF]

open access: yes, 2013
The rates of ammonolysis of alkyl benzoate and phenylacetate esters in liquid ammonia increase with the acidity of the leaving group alcohol and show relatively large Brønsted βlg values of −1.18 and −1.34, respectively, when plotted against the aqueous ...
Atherton, John   +2 more
core   +1 more source

Analysis of 3-sulfated and nonsulfated bile acids by one-step solvolysis and high performance liquid chromatography.

open access: yesJournal of Lipid Research, 1987
A facile solvolysis procedure of 3-sulfated bile acid was devised using trifluoroacetic acid, tetrahydrofuran, and methanol. The sulfate esters were completely solvolyzed within only 2 hr by the present method.
Y Hirano   +3 more
doaj   +1 more source

Scope and limitations of aliphatic Friedel-Crafts alkylations. Lewis acid catalyzed addition reactions of alkyl chlorides to carbon-carbon double bonds [PDF]

open access: yes, 1983
Lewis acid catalyzed addition reactions of alkyl halides 1 with unsaturated hydrocarbons 2 have been studied. 1:l addition products 3 are formed if the addends 1 dissociate faster than the corresponding products 3; otherwise, polymerization of 2 takes ...
Mayr, Herbert, Striepe, Wilhelm
core   +1 more source

Recovery and reuse of discontinuous carbon fibres by solvolysis: Realignment and properties of remanufactured materials [PDF]

open access: yes, 2016
Discontinuous carbon fibre tows were recovered after solvolysis of an aeronautic type composite made with RTM6 epoxy resin. A Sohxlet extraction method was used to quantify the organic residue on the fibre tows and showed that less than 3 wt% was ...
Bailleul, Bailleul Jean-Luc   +4 more
core   +1 more source

Solvolysis of Kraft Lignin to Bio-Oil: A Critical Review

open access: yesClean Technologies, 2020
Lignin, a component of lignocellulosic biomass, is abundant and is produced extensively as a waste product of the Kraft pulping process, lignin obtained from this process is called Kraft lignin (KL).
Abraham Castro Garcia   +2 more
doaj   +1 more source

The Consistency of Yields and Chemical Composition of HTL Bio-Oils from Lignins Produced by Different Preprocessing Technologies

open access: yesEnergies, 2022
This work evaluates the effect of feedstock type and composition on the conversion of lignin to liquid by solvolysis with formic acid as hydrogen donor (LtL), by analyzing the yields and molecular composition of the liquid products and interpreting them ...
Hilde Vik Halleraker   +6 more
doaj   +1 more source

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