OXIDATION OF ORGANIC SULFIDES BY QUINOLINIUM CHLOROCHROMATE: A KINETIC AND MECHANISTIC APPROACH
نویسندگان
چکیده
منابع مشابه
Quinolinium Dichromate Oxidation of Aliphatic Aldehydes: A Kinetic Study
Kinetic data on the rates of quinolinium dichromate oxidation of a series of aliphatic aldehydes have been determined and discussed with reference to aldehyde hydration equilibria. Kinetic results support a pathway proceeding via a rate-determining oxidative decomposition of a chromate ester of an aldehyde hydrate. A cyclic transition state is suggested; being a Hückel-type system (4n + 2), thi...
متن کاملOxidation of organic sulfides by vanadium haloperoxidase model complexes.
In addition to halide oxidation, the vanadium haloperoxidases are capable of oxidizing sulfides to sulfoxides. Four vanadium complexes with tripodal amine ligands, K[VO(O(2))(heida)] (1), VO(2)(bpg) (2), K[VO(2)(ada)] (3), and K(2)[VO(O(2))(nta)] (4), previously shown to perform bromide oxidation (Colpas, G. J.; Hamstra, B. J.; Kampf, J. W.; Pecoraro, V. L. J. Am. Chem. Soc. 1996, 118, 3469-347...
متن کاملBioinorganic Hydrocarbon Oxidation : Mechanistic and Kinetic Studies
Chapter 1. Principles of Small Molecule Activation by Metalloproteins as Exemplified by the Soluble Methane Monooxygenase Many metalloenzymes activate small molecules in a manner that is unique to natural systems. In this perspective we discuss the soluble protein system from Methylococcus capsulatus (Bath), which uses a mixed-function hydroxylase to convert methane selectively to methanol. Thr...
متن کاملconceptual metaphor and the acquisition of english metaphorical competence by persian english majors: a cognitive linguistic approach
بنا براستدلال زبانشناسان شناختی ، اندیشه آدمی تا حدّ زیادی استعاری است: ما اندیشه ای را، و یا قلمرو مفهومی معیّنی را، بر حسب اندیشه و یا قلمرو مفهومی معیّن دیگری درک ویا تجربه می کنیم. موارد این نوع اندیشیدن ، که استعارات مفهومی خوانده می شوند، در زبان های گوناگون به صورت تعبیرات استعاری واقعیّت می یابند. به گمان بعضی از پزوهشگران زبان دوم، آموزش وفراگیری این گونه تعبیرات باید بخشی لازم از برنامه ه...
15 صفحه اولChromic Acid Oxidation of Methylaminopyrazole Formamidine in Sulfuric Acid Medium: A Kinetic and Mechanistic Approach
The kinetics of chromic acid oxidation of one of aminopyrazole formamidine derivatives, namely N,N-dimethylN’-(5-methyl-1H-pyrazol-3-yl) formamidine (MAPF)in sulfuric acid solutions has been investigated at constant ionic strength and temperature. The progress of the reaction was followed spectrophotometrically. The reaction showed a first order dependence on [chromic acid] and fractional-first...
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: European Chemical Bulletin
سال: 2017
ISSN: 2063-5346
DOI: 10.17628/ecb.2017.6.163-170