The treatment of dichloroacetic acid or p-nitrobenzoic acid with phenylsulfenyl chloride in the presence of a tertiary amine, followed by the addition of aniline, affords the corresponding anilides in yields of up to 42%. 展开 关键词: Sulfenium ions Phosphorylation Carboxylic acids Anhydrides ...
Q. 并且张, Z。 H. (2004年) 关于被实现的环境概貌的一项研究在水泥期间的生命周期。 中国土木工程学报 (用中文), 37( 5), 86-91。 [translate] aThe acid coupling partner 145 for amine 138 was prepared as follows: 酸联结伙伴145为胺物138准备着如下: [translate] ...
Step 1:The amine acylation reaction inScheme 8.3proceeds with 100% atom economy as all the atoms from the reagents are incorporated into the maleamicacid product. The synthesis was successfully accomplished under solvent-free conditions (grinding of the two solids for 10min using a pestle and a...
The use and reactivity of the C=C pendant were verified employing a free-radical addition approach [112], which converts them into sulfonate, amine, and carboxylic acid functionalities by reaction with sodium-3-mercapto-1-propanesulfonate, 2-aminoethanethiol hydrochloride, and 3-mercaptopropionic ...
Van Rheenen V, Kelly RC, Cha DY (1976) An improved catalytic OsO4 oxidation of olefins to cis-1,2-gylcols using tertiary amine oxides as the oxidant. Tetrahedron Lett 23: 1973–1976 Google Scholar Takai K, Nitta K, Utimoto K (1986) Simple and selective method for aldehdyes (RCHO)...
Coupling reagentsBiopolymersAnticancer agentsConjugatesReaction of squaric acid diethyl ester (1) with a slight excess of a primary or secondary amine 2 in ethanol, dichloromethane or aqueous buffer (pH 7) at 20°C for 0.3–12 h gives the squaric acid amide esters 3 in mostly excellent yields....
Usually some coupling reagents are used to activate the carboxyl group to improve the yield of a carboxylic acid/amine coupling. Due to simplicity and high efficiency, EDC/NHS are the most widely used coupling reagents. The reaction can also take place in aqueous solutions, which helps avoiding...
a block polymer can be formed through reductive amine reaction by coupling with a primary amine-containing compound on the terminal group of HA [42]. Yao et al. [43] used a reductive amination reaction to attach the amine group of distearoylphosphatidylethanolamine (DSPE) to the aldehyde group...
Sulfonamides may be directly synthesized from sulfonic acid salts by treatment with triphenylphosphine ditriflate followed by an amine <2004JA1024>. This procedure, that avoids the generation of sulfonic acids, converts sulfonic acid salt 129 to sulfonamide 130 in 81% yield (Equation 92). Problems...
amine (332) afforded phenazine (333) quantitatively on oxidation with iron(III) chloride. These studies comprise models for bacterial phenazine pigments. Lastly NC (phenolic) linking is exemplified in the anodic conversion of the phenylethyltetrahydroisoquinoline (334) to the tetracyclic ammonium salt ...