Synthesis of cetylpyridiniumtribromide (CetPyTB) reagent by noble synthetic route and bromination of organic compounds

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Organic Compounds ◽  
Aromatic Compounds ◽  
Synthetic Route ◽  
Efficient Catalyst

Cetylpyridiniumtribromide (CetPyTB) was prepared by a noble synthetic protocol and reactivity studies was also performed. Result indicates that the reagent shows good capability as a brominating agent for carbon/electron-rich heterocyclic aromatic compounds in addition to an efficient catalyst for acetylation of the alcohols, therefore proving it to be a note-worthy addition to the current organic tribromide reagents.

Direct halogenation of organic compounds with halides using oxone in water — A green protocol

2009 ◽  
Vol 87 (12) ◽  
pp. 1675-1681 ◽  
Author(s):  
H. Firouzabadi ◽  
N. Iranpoor ◽  
S. Kazemi
Keyword(s):  
Carboxylic Acid ◽  
Organic Compounds ◽  
Aromatic Compounds ◽  
Large Scale ◽  
Unsaturated Alcohol ◽  
Green Protocol ◽  
Unsaturated Carboxylic Acid

Direct bromination and iodination of various aromatic compounds with NaBr and NaI using oxone (2KHSO5·KHSO4·K2SO4) in water was accomplished successfully in high-to-excellent yields. The main benefit of this protocol is the performance of the reactions in water in the presence of a harmless oxidant without the use of any organic co-solvents. Using NaBr and NaI as the safe sources of halogens is another advantage of the protocol. This method is easily applicable to the large-scale operations. We have also applied this method successfully for the iodocyclization of an unsaturated alcohol and an unsaturated carboxylic acid.

scholarly journals Readily available Ti-beta as an efficient catalyst for greener and sustainable production of campholenic aldehyde

2019 ◽  
Vol 9 (16) ◽  
pp. 4293-4303 ◽  
Author(s):  
Marta Puche Panadero ◽  
Alexandra Velty
Keyword(s):  
Sustainable Production ◽  
Beta Zeolite ◽  
Synthetic Route ◽  
Efficient Catalyst ◽  
Campholenic Aldehyde ◽  
Zeolite P

Different Ti-beta zeolite samples were prepared following a convenient and optimized post-synthetic route and starting from commercial Al-beta zeolite.

Variability of overhead volatile organic compounds in clonal tea (Camellia sinensis) and their influence on red crevice mite (Brevipalpus phoenicis Geijskes) infestations

2016 ◽  
Author(s):  
Jenipher A. Odak ◽  
P. Okinda Owuora ◽  
Lawrence O.A. Mang’uro ◽  
Evelyn Cheramgoi ◽  
And Francis N. Wachira
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Aromatic Compounds ◽  
Green Leaf Volatiles ◽  
Leaf Volatiles ◽  
Hexenyl Acetate ◽  
Volatile Organic ◽  
Brevipalpus Phoenicis ◽  
Tea Production ◽  
Breeding Selection

Tea production in Kenya is under threat due to red crevice mites (Brevipalpus phoenicis) infestations during droughts. Cultural pests control practices, e.g. use of resistant/tolerant cultivars are used in their control since pesticide use is prohibited. Plants release volatile organic compounds (OVOCs) that may influence susceptibility/resistance to pest infestations. OVOCs profiles released by 11 tea cultivars were evaluated to assess relationship between OVOCs and cultivar tolerance/susceptibility to B. phoenicis. Five clones were susceptible, with high B. phoenicis infestations while four clones were resistant, exhibiting low infestation levels. The infestations were linearly correlated to (E)-2-hexenal, (Z)-3-hexenal (p≤0.001), (Z)-3-hexenol, (Z)-3-hexenyl acetate, linalool, germacrene D, sum of green leaf volatiles (GLVs) (p≤0.01), 1-pentene-3-ol, hexanal, indole and (E)-β-ocimene (p≤0.05) levels. Most of aromatic compounds, some terpenoids compounds and sum of aromatic compounds were inversely (p≤0.05) correlated with B. phoenicis infestations. Susceptible varieties to B. phoenicis emitted high amounts of GLVs, especially (E)-2-hexenal, (Z)-3-hexenal, (Z)-3-hexen-1-ol and (Z)-3-hexenyl acetate. Results demonstrate that OVOCs profile may provide selection criteria for cultivars resistant to B. phoenicis infestations. Resistant cultivars are recommended for commercial exploitation in red crevice mites prone areas while breeding/selection programmes should incorporate OVOCs profiles to develop tea cultivars that resist red crevice mites attack.

Mg-doped OMS-2 nanorods: a highly efficient catalyst for purification of volatile organic compounds with full solar spectrum irradiation

2017 ◽  
Vol 4 (9) ◽  
pp. 1798-1807 ◽  
Author(s):  
Shiming Fang ◽  
Yuanzhi Li ◽  
Yi Yang ◽  
Jian Chen ◽  
Huihui Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Solar Spectrum ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Volatile Organic ◽  
Mg Doped

Mg-doped OMS-2 nanorods have a much higher catalytic activity for VOC purification than pure OMS-2 with full solar spectrum or vis-IR irradiation.

Gas-Phase Destruction of VOCs Using TiO2/UV and TiO2/O3/UV

1998 ◽  
Vol 3 (2) ◽  
Author(s):  
Rosana M. Alberici ◽  
Wilson F. Jardim
Keyword(s):  
Thin Film ◽  
Volatile Organic Compounds ◽  
Gas Phase ◽  
Organic Compounds ◽  
Aromatic Compounds ◽  
Photocatalytic Oxidation ◽  
Catalyst Deactivation ◽  
Volatile Organic ◽  
Film Reactor ◽  
Catalytic Deactivation

AbstractGas-phase photocatalytic oxidation of different classes of volatile organic compounds (VOCs), including alkanes, ketones, alcohols, chlorinated compounds and aromatic compounds, was investigated using an annular thin film reactor. For all organic compounds tested, catalytic deactivation was not observed, except for toluene (506 ppmv). For this compound, maximum destruction (87%) was maintained during the first 60 min of irradiation, dropping steadily due to catalyst deactivation to 20% after 150 min. The use of ozone as auxiliary agent in the photocatalytic oxidation of toluene and pyridine was also tested. For toluene, when O

ChemInform Abstract: Raney Co-Al Alloy, an Efficient Catalyst for the Selective Incorporation of Deuterium Atoms at the Benzylic Position of Aromatic Compounds.

ChemInform ◽  
2010 ◽  
Vol 27 (28) ◽  
pp. no-no
Author(s):  
T. TSUKINOKI ◽  
K. ISHIMOTO ◽  
M. MUKUMOTO ◽  
M. SUZUKI ◽  
T. KAWAJI ◽  
...  
Keyword(s):  
Aromatic Compounds ◽  
Al Alloy ◽  
Efficient Catalyst ◽  
Selective Incorporation

scholarly journals Sonochemical degradation of various monocyclic aromatic compounds: Relation between hydrophobicities of organic compounds and the decomposition rates

2008 ◽  
Vol 15 (4) ◽  
pp. 478-483 ◽  
Author(s):  
Ben Nanzai ◽  
Kenji Okitsu ◽  
Norimichi Takenaka ◽  
Hiroshi Bandow ◽  
Yasuaki Maeda
Keyword(s):  
Organic Compounds ◽  
Aromatic Compounds ◽  
Decomposition Rates

scholarly journals What Can Be Done with the Acetyl Group of Aryl-1-Ethanones?

2006 ◽  
Vol 1 (1) ◽  
pp. 36-49
Author(s):  
Fliur Macaev
Keyword(s):  
Organic Compounds ◽  
Aromatic Compounds ◽  
Keto Group ◽  
Chemical Transformations ◽  
Acetyl Group

Literature data on utilization of acetyl group of aryl-1-ethanones (acetophenones) for the synthesis of organic compounds is generalized. Different approaches of preparation of aromatic compounds by chemical transformations of methyl as well as keto- group of titled compounds are systematized. Examples of the synthesis of organic compounds based on products of primary transformations of aryl-1-ethanones are considered.

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