Reactions of 1-Hydroxyindoles with p-Toluenesulfonyl Chloride and p-Toluenesulfonic Acid
نویسندگان
چکیده
منابع مشابه
Hydrolysis of Proteins with p-Toluenesulfonic Acid
A new procedure for analyses for tryptophan in proteins and glycoproteins is described. The method utilizes ptoluenesulfonic acid as the catalyst for hydrolysis and the amino acid analyzer for the quantitative estimation of tryptophan. The hydrolysis of proteins is carried out in 3 N p-toluenesulfonic acid containing 0.2 % 3-(Z-aminoethyl)indole in evacuated sealed tubes at 110” for 22, 48, and...
متن کاملDirect Oxidation of Aldehydes to Methyl Esters with Urea Hydrogen Peroxide and p-Toluenesulfonyl Chloride
Combination of urea hydrogen peroxide and p-toluenesulfonyl chloride in methanol was proved to be facile and highly efficient for the oxidative methyl esterification of various aldehydes to the corresponding carboxylic methyl esters.
متن کاملDiazotization of Aniline Derivatives and Diazo Couplings in the Presence of p-Toluenesulfonic Acid by Grinding
The solid–solid reactions of electron-donor compounds, such as: barbituric acid (1a), thiobarbituric acid (1b), 1,3-dimethyl barbituric acid (1c), phenol (1d) and resorcinol (1e) with diazotized o-nitroaniline (3), m-nitroaniline (4) and p-nitroaniline (5) catalyzed by p-toluenesulfonic acid (2) afford azo dyes by grinding in good yields. This new method totally avoids the use of inorganic acid...
متن کاملSynthesis and optimization ring opening of monoepoxide linoleic acid using p-toluenesulfonic acid
Biolubricant base oils, 9,12-hydroxy-10,13-oleioxy-12-octadecanoic acid (HYOOA) was synthesized based on the esterification reaction of Monoepoxide linoleic acid 9(12)-10(13)-monoepoxy 12(9)-octadecanoic acid (MEOA) with oleic acid (OA) and catalyzed by p-Toluenesulfonic acid. The optimum conditions for the experiment using D-optimal design to obtain high yield% of 84.61, conversion% of 83.54 a...
متن کاملFacile synthesis of symmetrical bis(benzhydryl)ethers using p-toluenesulfonyl chloride under solvent-free conditions
BACKGROUND The benzhydryl ether moiety is widely distributed in nature and constitutes a key structural motif in numerous molecules of significant biological potential and of prospective clinical uses. Solvent-free and cost-effective facile synthesis of symmetrical bis(benzhydryl)ethers is, thus, much desirable. RESULTS A simple and efficient method for the facile synthesis of symmetrical bis...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: HETEROCYCLES
سال: 2000
ISSN: 0385-5414
DOI: 10.3987/com-00-9038