A Practical Method for Epoxidation of Terminal Olefins with 30% Hydrogen Peroxide under Halide-Free Conditions

1996 ◽  
Vol 61 (23) ◽  
pp. 8310-8311 ◽  
Author(s):  
Kazuhiko Sato ◽  
Masao Aoki ◽  
Masami Ogawa ◽  
Tadashi Hashimoto ◽  
Ryoji Noyori
Keyword(s):  
Hydrogen Peroxide ◽  
Practical Method ◽  
Terminal Olefins

ChemInform Abstract: A Practical Method for Epoxidation of Terminal Olefins with 30% Hydrogen Peroxide under Halide-Free Conditions.

ChemInform ◽  
2010 ◽  
Vol 28 (15) ◽  
pp. no-no
Author(s):  
K. SATO ◽  
M. AOKI ◽  
M. OGAWA ◽  
T. HASHIMOTO ◽  
R. NOYORI
Keyword(s):  
Hydrogen Peroxide ◽  
Practical Method ◽  
Terminal Olefins

scholarly journals Cationic palladium(ii) complexes as catalysts for the oxidation of terminal olefins to methyl ketones using hydrogen peroxide

2015 ◽  
Vol 17 (5) ◽  
pp. 2750-2757 ◽  
Author(s):  
Qun Cao ◽  
David S. Bailie ◽  
Runzhong Fu ◽  
Mark J. Muldoon
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Oxidation ◽  
Methyl Ketones ◽  
Terminal Olefins ◽  
Cationic Palladium

Ligated Pd(ii) complexes have been studied for the catalytic oxidation of terminal olefins to their corresponding methyl ketones.

scholarly journals In Situ Electrophilic Activation of Hydrogen Peroxide for Catalytic Asymmetric α-Hydroxylation of 3-Substituted Oxindoles

Synlett ◽  
2017 ◽  
Vol 28 (11) ◽  
pp. 1291-1294 ◽  
Author(s):  
Takashi Ooi ◽  
Kohsuke Ohmatsu ◽  
Yuichiro Ando
Keyword(s):  
Hydrogen Peroxide ◽  
Phase Transfer ◽  
Practical Method ◽  
Optically Active ◽  
Aqueous Hydrogen Peroxide ◽  
Bond Forming ◽  
Electrophilic Activation ◽  
Oxygen Bond ◽  
Activation Of Hydrogen Peroxide

Peroxy trichloroacetimidic acid, in situ generated from aqueous hydrogen peroxide and trichloroacetonitrile, was found to act as a competent electrophilic oxygenating agent for the direct α-hydroxylation of oxindoles. The use of chiral 1,2,3-triazolium salt as a phase-transfer catalyst enabled rigorous absolute stereocontrol in the carbon–oxygen bond-forming reaction. The present study provides a new, yet practical method for straightforward access to optically active α-hydroxycarbonyl compounds.

ChemInform Abstract: Oxidation of Terminal Olefins by Hydrogen Peroxide Catalyzed by Tetrakis(triphenylphosphine)palladium(0).

ChemInform ◽  
2010 ◽  
Vol 24 (28) ◽  
pp. no-no
Author(s):  
M. IOELE ◽  
G. ORTAGGI ◽  
M. SCARSELLA ◽  
G. SLEITER
Keyword(s):  
Hydrogen Peroxide ◽  
Terminal Olefins

Efficient epoxidation reaction of terminal olefins with hydrogen peroxide catalyzed by an iron (II) complex

2018 ◽  
Vol 59 (25) ◽  
pp. 2436-2439 ◽  
Author(s):  
Lu Li ◽  
Hong-Jin Song ◽  
Xiang-Guang Meng ◽  
Ren-Qiang Yang ◽  
Ni Zhang
Keyword(s):  
Hydrogen Peroxide ◽  
Epoxidation Reaction ◽  
Terminal Olefins

Rumen degradation of straw. 8. Effect of alkaline hydrogen peroxide on degradation of straw using either sodium hydroxide or gaseous ammonia as source of alkali

1989 ◽  
Vol 48 (3) ◽  
pp. 553-559 ◽  
Author(s):  
E. A. Adebowale ◽  
E. R. Ørskov ◽  
P. M. Hotten
Keyword(s):  
Hydrogen Peroxide ◽  
Sodium Hydroxide ◽  
Wheat Straw ◽  
Practical Method ◽  
Gaseous Ammonia ◽  
Alkaline Hydrogen Peroxide ◽  
Comparative Effect ◽  
Maize Stover ◽  
Rumen Degradation ◽  
Maize Cob

ABSTRACTThe comparative effect of spraying wheat straw, maize stover and maize cob with sodium hydroxide and alkaline (sodium hydroxide treated) hydrogen peroxide over a range of moisture contents was evaluated. The effect of concentration of hydrogen peroxide on straw subsequently ammoniated was also investigated. No differences (P < 0·05) were detected between sodium hydroxide and similar concentrations of sodium hydroxide used to provide alkali for alkaline hydrogen peroxide treatments. When however, gaseous ammonia was used as the source of alkali there were significant linear increases in degradability with increasing concentrations of hydrogen peroxide. At 48 h incubation, degradability values for untreated, ammonia-treated, 10, 50 and 100 g alkaline (ammonia) hydrogen peroxide per kg were 528, 595, 640, 676 and 716 for wheat straw, 618, 652, 683, 717 and 743 for maize stover and 392, 467, 585, 632 and 686 g/kg for maize cob respectively. It is concluded that the use of gaseous ammonia as the source of alkali seems a possible practical method of using hydrogen peroxide to increase degradability of straws.

scholarly journals 341 Overcoming Seed Dormancy in Winecups, Callirhoe involucrata

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 450F-451
Author(s):  
Dianne Oakley ◽  
Julie Laufmann ◽  
James Klett ◽  
Harrison Hughes
Keyword(s):  
Hydrogen Peroxide ◽  
Gibberellic Acid ◽  
Seed Dormancy ◽  
Seed Coat ◽  
Practical Method ◽  
Boiling Water ◽  
Limiting Factor ◽  
Water Leaching ◽  
Hard Seed ◽  
A Minor

Propagation of Winecups [Callirhoe involucrata (Torrey & A. Gray)] for use as a landscape ornamental has been impeded by a lack of understanding of the seed dormancy and a practical method for overcoming it. As with many members of the Malvaceae family, C. involucrata produces hard seed. In the populations tested, it accounted for 90% of an average sample. Impermeability, however, is not the only limiting factor to germination. Three disparate populations of seed, representing two different collection years have been investigated using moist pre-chilling, boiling water, leaching, gibberellic acid, hydrogen peroxide and mechanical and chemical scarification methods. Scarifying in concentrated sulfuric acid stimulates germination of some seed fractions and causes embryonic damage in others, suggesting variation in seed coat thickness. Similar results were obtained using a pressurized air-scarifier; the hard seed coat of some seed fractions were precisely scarified while others were physically damaged using the same psi/time treatment. Placing seed in boiling water increases germination from 4%, 7%, and 18 % to 23%, 25%, and 77% in the three populations, respectively. Leaching for 24/48 h in cold (18 °C) aerated water or for 24 h in warm (40 °C) aerated water showed only a minor increase over the control. Pre-chilling at 5 °C for 30, 60, and 90 days showed no improvement over the control. Gibberellic acid-soaked blotters improved germination at 400 ppm to 20%, 10%, and 41%; at 500 ppm germination was reduced. Soaking seed for 24 h in a 3% concentration of hydrogen peroxide did not effect germination; at a 30% concentration germination was reduced. The considerable variation in seed dormancy expression may be a function of differences in environmental factors during development or seed age.

scholarly journals A green, reusable and highly efficient solid acid catalyst for the oxidation of aldehydes to the corresponding carboxylic acids using H2O2 and KMnO4: H5PV2Mo10O40 (10-molybdo-2-vanadophosphoric heteropolyacid)

2011 ◽  
Vol 76 (11) ◽  
pp. 1513-1522 ◽  
Author(s):  
Abdollah Shojaei ◽  
Ali Rezvani ◽  
Majid Heravi
Keyword(s):  
Hydrogen Peroxide ◽  
Carboxylic Acids ◽  
Relative Stability ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Aromatic Aldehydes ◽  
Practical Method ◽  
Mild Conditions ◽  
Catalyzed Oxidation

H5PV2Mo10O40-catalyzed oxidation of aromatic aldehydes to the corresponding carboxylic acids using hydrogen peroxide and KMnO4 as oxidants under mild conditions is reported. This system provides an efficient, convenient and practical method for the oxidation of aromatic aldehydes. In this work, differences between Keggin and Dawson type polyoxometalates are addressed in term of relative stability, hardness and acidity.

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