Highly selective oxidation of unsaturated hydrocarbons to carbonyl compounds by two-phase catalysis

Tetrahedron ◽  
2016 ◽  
Vol 72 (42) ◽  
pp. 6705-6710 ◽  
Author(s):  
Chun Mi ◽  
Lu Li ◽  
Xiang-Guang Meng ◽  
Ren-Qiang Yang ◽  
Xiao-Hong Liao
Keyword(s):  
Selective Oxidation ◽  
Carbonyl Compounds ◽  
Unsaturated Hydrocarbons ◽  
Two Phase

Hypervalent iodine catalysis for selective oxidation of Baylis–Hillman adducts via in situ generation of o-iodoxybenzoic acid (IBX) from 2-iodosobenzoic acid (IBA) in the presence of oxone

2016 ◽  
Vol 40 (12) ◽  
pp. 10300-10304 ◽  
Author(s):  
Raktani Bikshapathi ◽  
Parvathaneni Sai Prathima ◽  
Vaidya Jayathirtha Rao
Keyword(s):  
Selective Oxidation ◽  
Carbonyl Compounds ◽  
Hypervalent Iodine ◽  
In Situ Generation ◽  
Iodosobenzoic Acid ◽  
High Yields

An efficient, eco-friendly protocol for selective oxidation of primary and secondary Baylis–Hillman alcohols to the corresponding carbonyl compounds in high yields has been developed with 2-iodosobenzoic acid (IBA).

Transfer Hydrogenation of Carbonyl Compounds and Alkenes Catalyzed by Ruthenium(II)-N-Heterocycle Carbene Complexes

2007 ◽  
Vol 72 (8) ◽  
pp. 1037-1045 ◽  
Author(s):  
Marianna Fekete ◽  
Ferenc Joó
Keyword(s):  
Carbonyl Compounds ◽  
Hydrogen Transfer ◽  
Transfer Hydrogenation ◽  
Unsaturated Alcohol ◽  
Two Phase ◽  
Carbene Complexes ◽  
Saturated Alcohol ◽  
Catalytic Activities ◽  
Saturated Aldehyde ◽  
Phase Mixture

The Ru(II)-N-heterocycle carbene complexes [RuCl2(η6-p-cymene)L] (L = 1-butyl-3-methylimid- azol-2-ylidene) and [RuCl(η6-p-cymene)L(pta)]Cl (pta = 1,3,5-triaza-7-phosphaadamantane) showed excellent catalytic activities (with turnover frequencies up to 1116 h-1) in the hydrogen transfer reduction of cinnamaldehyde and several ketones using propan-2-ol/KOH as a H-donor. Similar hydrogenations of trans-stilbene and cyclohexene were characterized by low conversions. The hydrogenation of 4-phenylbut-3-en-2-one and cinnamaldehyde proceeded with moderate selectivities of the formation of the saturated alcohol or of the of C=C hydrogenation (giving saturated ketone or saturated aldehyde). In the case of cinnamaldehyde, the unsaturated alcohol is initially formed; however, subsequent redox isomerization to the saturated aldehyde with the same catalyst diminishes its yield. The hydrogen transfer from formate to 4-phenylbut-3-en-2-one in an aqueous-organic two-phase mixture was also demonstrated.

Sodium Selenosulfate from Sodium Sulfite and Selenium Powder: An Odorless Selenylating Reagent for Alkyl Halides to Produce Dialkyl Diselenide Catalysts

Synlett ◽  
2019 ◽  
Vol 30 (14) ◽  
pp. 1698-1702
Author(s):  
Yonghong Liu ◽  
Hai Ling ◽  
Chao Chen ◽  
Qing Xu ◽  
Lei Yu ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Carbonyl Compounds ◽  
Sodium Sulfite ◽  
Alkyl Halides ◽  
Production Costs ◽  
Synthetic Method ◽  
Practical Applications ◽  
Sodium Selenosulfate ◽  
Villiger Oxidation

Na2SeSO3, which can be generated in situ by the reaction of Na2SO3 with Se power, was found to be an odorless reagent for the selenenylation of alkyl halides to produce dialkyl diselenides. These products have been recently shown to be good catalysts for the Baeyer–Villiger oxidation of carbonyl compounds, for the selective oxidation of alkenes, or for the oxidative deoximation of oximes. By using aqueous EtOH as the solvent and avoiding the generation of a malodourous selenol intermediate, the selenylation reaction with Na2SeSO3 is much more environmentally friendly than conventional methods. Owing to the cheap and abundant starting materials and selenium reagents, our novel synthetic method reduces the production costs of dialkyl diselenides as organoselenium catalysts, thereby advancing practical applications of organoselenium-catalysis technologies.

Selective oxidation of benzyl alcohol by two phase electrolysis using nitrate as mediator

2012 ◽  
Vol 2 (4) ◽  
pp. 824 ◽  
Author(s):  
C. Christopher ◽  
S. Lawrence ◽  
A. John Bosco ◽  
N. Xavier ◽  
S. Raja
Keyword(s):  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Two Phase ◽  
Oxidation Of Benzyl Alcohol
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