ACTION OF AROMATIC ALCOHOLS ON AROMATIC COMPOUNDS IN THE PRESENCE OF ALUMINUM CHLORIDE. III. CONDENSATION OF BENZYL ALCOHOL AND PHENOL

1924 ◽  
Vol 46 (12) ◽  
pp. 2775-2779 ◽  
Author(s):  
Ralph C. Huston
Keyword(s):  
Benzyl Alcohol ◽  
Aluminum Chloride ◽  
Aromatic Compounds ◽  
Aromatic Alcohols

scholarly journals Changes of free and glycosidically bound monoterpenes and aromatic alcohols in Moscatuel and Ruby Seedless table grapes during development

OENO One ◽  
2012 ◽  
Vol 46 (1) ◽  
pp. 41
Author(s):  
José Fenoll ◽  
María-Carmen Martínez ◽  
Pilar Hellín ◽  
Pilar Flores
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Vitis Vinifera ◽  
Benzyl Alcohol ◽  
Aromatic Compounds ◽  
Table Grape ◽  
Maturity Stages ◽  
Table Grapes ◽  
Linalool Oxide ◽  
Aromatic Alcohols

<p style="text-align: justify;"><strong>Aims</strong>: The evolution of free and bound aromatic compounds (monoterpenes and aromatic alcohols) during ripening was determined in two cultivars of <em>Vitis vinifera</em> : Moscatuel (muscat aroma) and Ruby Seedless (neutral aroma). The aim was to identify the aromatic compounds in both varieties and to understand the differences in their aromatic characteristics.</p><p style="text-align: justify;"><strong>Methods and results</strong>: The aromatic compounds were measured at six different maturity stages by gas chromatography and mass spectrometry. The most abundant compounds detected in Moscatuel grapes were linalool, geraniol, citronellol, nerol, citral, α-terpineol, linalool oxide I, linalool oxide II, rose oxides, benzyl alcohol and 2-phenylethanol. In general, the concentration of the main terpene compounds increased during grape development. The most abundant compounds detected in Ruby Seedless grapes were benzyl alcohol and 2-phenylethanol at concentrations higher than those observed in Moscatuel. The concentrations of the bound compounds were higher than those of the free forms, except for geraniol, nerol and citronellol in Ruby Seedless. Based on the Odour Activity Values (OAVs), linalool was the most odour-active odorant at the end of maturation in Moscatuel grapes. Other monoterpenes potentially contributing to the muscat aroma (OAV &gt; 1) of this variety were rose oxide, citral and geraniol. In Ruby Seedless none of the studied compounds showed OAV &gt; 1.</p><p style="text-align: justify;"><strong>Conclusion</strong>: Several differences between Moscatuel and Ruby Seedless were observed in the monoterpene and alcohol profile and their contribution to the aroma.</p><p style="text-align: justify;"><strong>Significance and impact of the study</strong>: This study characterizes and compares two non-previously described varieties of table grape, very appreciated by consumers, with different aromatic characteristics.</p>

scholarly journals Orthoamide, LXIII [1]. Tris(dichlormethyl)amin, ein neues breit anwendbares Formylierungsmittel für Aromaten / Orthoamides, LXIII [1]. Tris(dichloromethyl)amine, a New Formylating Reagent for Aromatic Compounds of Wide Scope

2006 ◽  
Vol 61 (4) ◽  
pp. 448-463 ◽  
Author(s):  
Willi Kantlehner ◽  
Ralf Kreß ◽  
Franziska Zschach ◽  
Jens Vetter ◽  
Georg Ziegler ◽  
...  
Keyword(s):  
Aluminum Chloride ◽  
Aromatic Compounds ◽  
Lewis Acids ◽  
Aluminium Chloride ◽  
Aromatic Nucleus ◽  
Wide Scope ◽  
Formyl Group ◽  
Reaction Conditions ◽  
Optimal Reaction

The reagent system formed from tris(dichloromethyl)amine (5) and aluminium chloride allows the formylation of aromatic compounds. The scope of the method is comparable with that of the Olah formylation and the Groß-Rieche procedure, since benzene and even chlorobenzene can be formylated. One formyl group is transferred from 5 to the aromatic nucleus. In order to find optimal reaction conditions, the molar amounts of aromatic compounds, 5 and aluminum chloride were varied as well as reaction temperatures and solvents. The activation of 5 with other Lewis acids is also described

(100) surface-exposed CeO2nanocubes as an efficient heterogeneous catalyst in the tandem oxidation of benzyl alcohol, para-chlorobenzyl alcohol and toluene to the corresponding aldehydes selectively

2015 ◽  
Vol 3 (13) ◽  
pp. 6909-6920 ◽  
Author(s):  
Kalyanjyoti Deori ◽  
Chinmoy Kalita ◽  
Sasanka Deka
Keyword(s):  
Benzyl Alcohol ◽  
Heterogeneous Catalyst ◽  
Active Surface ◽  
Oxidation Of Benzyl Alcohol ◽  
Aromatic Alcohols ◽  
Efficient Heterogeneous Catalyst

Efficient oxidation of aromatic alcohols and toluene to the corresponding aldehydes was achieved selectively by an active-surface-exposed CeO2nanocube heterogeneous catalyst.

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