Einfache Bildung von o-Nitrosophenol aus Benzol und Hydroxylamin durch Luftoxydation. Pr�parative Darstellung von o-Nitrosophenol und Nitrosocresol aus Benzol bzw. Toluol durch H2O2 Oxydation
<i>N</i>-Oxidation of arylamines to nitrosobenzenes using chloroperoxidase purified from<i>Musa paradisiaca</i>stem juice
作者:Pratibha Yadav、Jitendra K. Sharma、Vinod K. Singh、Kapil D. S. Yadav
DOI:10.3109/10242422.2010.489943
日期:2010.1
Abstract N-Oxidation of arylamines to their corresponding nitrosobenzenes using a new chloroperoxidase purified from Musa paradisiaca stem juice has been examined. The enzymatic characteristics of the stem chloroperoxidase using 4-chloroaniline as substrate were determined. The Km values for 4-chloroaniline and H2O2 were 770 μM and 154 μM respectively, while the pH and temperature optima were 4.4 and
The present invention relates to a process for producing acrolein by liquid phase dehydration of glycerol by preparing a mixture of a catalyst suspended in an organic solvent comprising one or more vinyl polymers and glycerol; and then mixing and heating the mixture to between 150° C. and 350° C. to dehydrate the glycerol and form acrolein. The vinyl polymers are selected from the group consisting of polyolefins, polystyrene, and mixtures thereof. The polyolefins may be polyethylene, polypropylene, polybutylene, polyisobutylene, polyisoprene, polypentene, or mixtures thereof. The acrolein may be subjected to vapor phase oxidation in the presence of a catalyst, such as a mixed metal oxide, to produce acrylic acid.
Method for inhibiting polymerization of (meth)acrylic acid and its esters using an inhibitor and a process for making a compound useful as such an inhibitor
申请人:Bass Stephen
公开号:US20060074257A1
公开(公告)日:2006-04-06
This invention relates to a method for inhibiting polymerization of (meth)acrylic acid and its esters using a polymerization inhibitor which comprises at least one reduced halide-content azine dye-based compound. A process for producing reduced halide-content azine dye-based compounds using ion exchange resin technology is also provided.
Considering their growing attention in the field of medicinal chemistry and drug-discovery research, the facile and convenient approaches towards the preparation of 2-aryl benzoxazole derivatives have been described. The transformation is accomplished by using Fe(III)-catalyzed C–H activation of benzoxazoles with boronic acids to obtain a wide range of C2-arylated benzoxazoles in high yields. The developed
Selective N-oxidation of aromatic amines to nitroso derivatives using a molybdenum acetylide oxo-peroxo complex as catalyst
作者:Ankush V. Biradar、Trupti V. Kotbagi、Mohan K. Dongare、Shubhangi B. Umbarkar
DOI:10.1016/j.tetlet.2008.04.005
日期:2008.5
oxo-peroxo complex obtained in situ by the treatment of the corresponding molybdenum acetylide carbonyl complex, CpMo(CO)3(CCPh); Cp = η5-C5H5 with H2O2, has been used as an efficient catalyst for selective N-oxidation of primaryamines to nitroso derivatives. Excellent amine conversion (up to 100%) and very high selectivity for nitroso compounds (99%) have been obtained using 30% hydrogen peroxide as