نتایج جستجو برای: alcohols

تعداد نتایج: 11549  

2000
Nisha Shukla Andrew J. Gellman

Temperature programed desorption has been used to study the desorption kinetics and desorption energies of a set of alcohols and fluorinated alcohols adsorbed on an a-CHx film. The alcohols serve as models for the hydroxyl end groups of Fomblin Zdol, the lubricant most commonly used with the amorphous carbon overcoats sputtered onto the surfaces of magnetic data storage disks. Temperature progr...

2004
Douglas M. Light

Electroantennograms (EAGs) were recorded from unmated, laboratory-reared, male and female oriental fruit flies, Dacus dorsalis, in response to a range of between C~ and Cl2 carbon chain-length saturated and unaturated aliphatic alcohols and aldehydes, most all of which are known host-plant volatiles. Only two of the 35 compounds tested elicited significantly larger EAGs from female than male an...

2013
Nida Ambreen Ravi Kumar Thomas Wirth

Hypervalent iodine(III)/TEMPO-mediated oxidation of various aliphatic, aromatic and allylic alcohols to their corresponding carbonyl compounds was successfully achieved by using microreactor technology. This method can be used as an alternative for the oxidation of various alcohols achieving excellent yields and selectivities in significantly shortened reaction times.

Journal: :Physical review letters 2014
C Gainaru R Figuli T Hecksher B Jakobsen J C Dyre M Wilhelm R Böhmer

Liquids composed of small-molecule monohydroxy alcohols are demonstrated to display rheological behavior typical for oligomeric chains. This observation was made possible by rheological experiments in which more than seven decades in frequency and more than five decades on the mechanical modulus scale are covered. The singly hydrogen-bonded monohydroxy alcohols were chosen because they display ...

2011
Yi Chiao Fan Ohyun Kwon

In this study, we prepared oxizolidines through 1,3-bis(diphenylphosphino)-propane (DPPP)-catalyzed mixed double-Michael reactions of β-amino alcohols with electron-deficient acetylenes. These reactions are very suitable for the diversity-oriented parallel syntheses of oxizolidines because: (i) they are performed under mild metal-free conditions and (ii) the products are isolated without compli...

Journal: :Organic & biomolecular chemistry 2012
Ramalingam Boobalan Chinpiao Chen Gene-Hsian Lee

A series of Schiff base ligands were synthesized from (1R)-camphor. Under the optimal conditions, (+)-SBAIB-a, 10 was found to be an excellent catalyst for the enantioselective addition of phenylacetylene to various aldehydes without utilizing either achiral additives or Ti(O(i)Pr)(4). This approach yielded (R)-propargylic alcohols in extremely high yields (up to 99%) and excellent enantioselec...

Journal: :The Journal of General Physiology 1946
V. G. Dethier L. E. Chadwick

Series of concentrations of 15 aliphatic alcohols were presented in 0.1 M sucrose to the tarsi of antennectomized-labellectomized blowflies (Phormia regina Meigen). With the pri-n-alcohols the mean concentrations at rejection formed a Traube series. When the rejection thresholds for all the alcohols tested were compared with their boiling points, vapor pressures, molecular surface areas) molecu...

Journal: :Chemical communications 2015
Yushi Nakamura Tetsuo Ohta Yohei Oe

A formal anti-Markovnikov hydroamination of allylic alcohols using a Ru catalyst via tandem oxidation/1,4-conjugate addition/1,2-reduction was developed. Thus, the reaction of allylic alcohols with amines was performed in the presence of the catalyst generated from RuClH(CO)(PPh3)3 and 2,6-bis(n-butyliminomethyl)pyridine in situ to afford the corresponding γ-amino alcohols efficiently.

Journal: :Chemical communications 2013
Min Wang Feng Wang Jiping Ma Chen Chen Song Shi Jie Xu

A superhydrophobic catalyst was prepared by immobilizing Pt nanoparticles on superhydrophobic organic-inorganic hybrid silicas, which showed high activity and selectivity in the oxidation of aliphatic alcohols to carboxylic acids.

2015
Graeme Barker David G Johnson Paul C Young Stuart A Macgregor Ai-Lan Lee

Gold(I)-catalysed direct allylic etherifications have been successfully carried out with chirality transfer to yield enantioenriched, γ-substituted secondary allylic ethers. Our investigations include a full substrate-scope screen to ascertain substituent effects on the regioselectivity, stereoselectivity and efficiency of chirality transfer, as well as control experiments to elucidate the mech...

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