carboxylic acids (acyclic compounds)carboxylic acids (benzene compounds)doi:10.1002/chin.199607305T. HARRISONRes. Lab., Merck Sharp&Dohme, Harlow, Essex CM20 2QR, UKT. LADUWAHETTYRes. Lab., Merck Sharp&Dohme, Harlow, Essex CM20 2QR, UK...
carboxylic acid esters (benzene compounds)carboxylic acids (benzene compounds)ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please ...
Fig. 1: Catalytic cross-electrophile coupling between carboxylic acids and organohalides. a The abundant feedstock chemicals in synthetic lab. b Direct cross-electrophile coupling of acid and organohalides. c Key challenge: C–O versus C–C formation. Full size image In recent years, nickel-catal...
Utilizing abundant aliphatic carboxylic acids activated as NHPI-based redox-active esters (RAEs) to serve as sp3 electrophiles, and employing visible light-mediated decarboxylation to yield carbon-centered radicals29,30,31,32, we envisioned a trapping mechanism with aldehyde sulfonyl hydrazones to, ...
Esterase genes, esterase, recombinant plasmids and transformants containing the recombinant plasmid and methods of producing optically acitve carboxylic acids and their enantiomeric esters using said transformants The present invention relates to a DNA fragment containing a nucleotide sequence that encodes ...
) or 7-aminocephalosporanic acid are freed from formic acid and/or acetic acid impurities by admixing the solution with methanol and an acid having a pKa less than that of the said acid impurities so that they are converted to their methyl esters, and then distilling off these esters. ...
Montan wax was recovered in 14.6% yield from Neyveli lignite tar and was characterized by modern spectroscopic methods, including NMR spectroscopy and mass spectrometry, and was shown to be mainly long-chain paraffins of ~C30 together with smaller quantities of long-chain fatty acids and esters ...
General synthetic routes to quinone acids (8), quinone amides (9), quinone alcohols (10), and quinone methylketones (11) with polyprenyl side chains, in which allylic alcohols (3) are employed as the key intermediates, are described. The... S Terao,M Shiraishi,K Kato,... - 《Journal ...
oxocarboxylic acids and esters (acyclic compoundsIrradiation of pyruvic acid in the presence of electron acceptors gives rise to enhanced carbon dioxide production, and in the case of methylviologen, this leads to the formation of reduced methylviologen, which provides further evidence that the photo...
Carboxylic acids are widely available and generally inexpensive from abundant biomass feedstocks, and they are suitable and generic coupling partners in synthetic chemistry. Reported herein is an electroreductive coupling of stable and versatile carboxyl