PROBLEM TO BE SOLVED: To obtain a low-impurity alcohol corresponding to a carboxylic acid (or ester) in high selectivity and high yield and at a low cost by reducing the carboxylic acid (or its ester) with diisobutyl aluminum hydride in the presence of a specific alkyl aluminum chloride....
Synthesis of Ethers by GaBr3‐Catalyzed Reduction of Carboxylic Acid Esters and Lactones by Siloxanes Ethers were synthesized by reduction of the respective esters catalyzed by gallium bromide (GaBr3) and using siloxanes, preferentially 1,1,3,3-tetramethyld... U Biermann,JO Metzger - 《Chemsuschem...
Slightlyacidic.1to1.5equivalentsofPCC Pyridiniumdichromate(PDC)lessacidicthanPCC.InDMF,easilygetcarboxylicacid Swernoxidation Proceedsrapidlyatlowtemprature.Canbeemployedforthepreparationof-ketoneandacylsilaneswhicharepronetohydration,polymerization,andairoxidation.SwernoxidationcanbeperformedwithDMSO,P2O5,andEt3N...
1. A water-soluble pouch containing a liquid composition wherein the water-soluble pouch is made from a film comprising a co-polymer of vinyl alcohol and a carboxylic acid, wherein the liquid composition contained within said pouch compr... F De Buzzaccarini,SJL Coosemans,LMP Gualco 被引量...
Zeolites employed as catalysts in methanol conversion promote the formation of another significant class of oxygenate intermediates: aldehydes/ketones and acetals/ketals (Fig. 1b). These molecules can be generated through various pathways, including acid/ester hydrogenation, carboxylic acid ketonization,...
The unique metabolic capability of the dual action anaerobic bacteria has been exploited to solubilize and/or precipitate radionuclides and toxic metals by direct enzymatic action and indirect action due to production of organic acid metabolites (Dominguez-Benetton et al., 2018; Francis, 1997). View...
In this pathway, fluspidine is divided into two units: enantiomerically pure o-Br-phenyl-substituted β-hydroxy carboxylic ester (unit A), and a boron-substituted tetrahydropyridine ring (unit B). After unit A is coupled to unit B, intramolecular halo etherification provides the key spiro[iso...
美 英 un.酸性还原作用 英汉 网络释义 un. 1. 酸性还原作用 例句 释义: 全部,酸性还原作用
Regioselective reduction of malic acid ester.[1] Diastereoselective reduction of a β-hydroxyketone using Me4NHB(OAc)3[2]: More diastereoselective than NaHB(OAc)3. One-step conversion of a nitrile into a Boc-protected amine[3a]: The combination of a Lewis acid and NaBH4can also reduce nitro...
The ester (814) with acid gives the quinolone (815) 〈55JA5932〉, while the amide (816) is converted by heat into compound (817) (a mixture of cis and trans isomers) 〈69HCA1929〉. The dioxobenzazepine (818) similarly gives the 4-hydroxyquinol-2-one (819) 〈59JOC41〉. An ...