Results 81 to 90 of about 158,056 (165)

Sulfonated carbon catalyzed oxidation of aldehydes to carboxylic acids by hydrogen peroxide

, 2013
Sulfonated carbon as a strong and stable solid acid catalyst exhibited excellent catalytic performance in various acid-catalyzed reactions. Here, sulfonated carbon, as catalyst for oxidation reaction, was prepared via the carbonization of starch followed
Zhou, Lipeng, Chen, Chen, Xu, Jie, Dong, Beibei, Tang, Si, Ma, Hong, 杨晓梅, Yang, Xiaomei   +7 more
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pH-based colorimetric detection of monofunctional aldehydes in liquid and gas phases

Open Chemistry
An ammonium chloride–Congo red (NH4Cl-CR) solution is presented as a potential sensing solution for aldehydes. Monofunctional aldehydes such as formaldehyde, acetaldehyde, benzaldehyde, and isobutyraldehyde caused changes in the pH of the sensing ...
dela Cruz Ma. Carmela P., Organo Voltaire G.   +1 more
doaj   +1 more source

A New Class of Structurally Rigid Tricyclic Chiral Secondary Amine Organocatalyst:Highly Enantioselective Organocatalytic Michael Addition of Aldehydes to Vinyl Sulfones

, 2011
A New Class of Structurally Rigid Tricyclic Chiral Secondary Amine Organocatalyst:Highly Enantioselective Organocatalytic Michael Addition of Aldehydes to Vinyl ...
YanLingLiu, YunPengLu, Teck-PengLoh, 肖建, TeckPengLoh, PohShenWong   +5 more
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Aldehydes: What We Should Know About Them

Organics
From Egyptian mummies to the Chanel N° 5 perfume, aldehydes have been used for a long time and continue to impact our senses in a wide range of perfumes, foods, and beverages. Aldehydes represent one of the categories of volatile organic compounds (VOCs),
Alessia Catalano, Annaluisa Mariconda, Assunta D’Amato, Domenico Iacopetta, Jessica Ceramella, Maria Marra, Carmela Saturnino, Maria Stefania Sinicropi, Pasquale Longo   +8 more
doaj   +1 more source

Efficient reductive selenation of aromatic aldehydes to symmetrical diselenides with Se/CO/H2O under atmospheric pressure

, 2004
An efficient method for the synthesis of symmetrical diselenides is described. Reductive selenation of aromatic and heterocyclic aromatic aldehydes (ArCHO) with Se/CO/H2O in DMF afforded diselenides (ArCH2SeSeCH2Ar) in yields up to 94% under atmospheric ...
Lu, SW, Yu, ZK, Tian, FS
core   +1 more source

A gas-phase “top-down” chemical link between aldehydes and alcohols

Frontiers in Astronomy and Space Sciences
IntroductionAlcohols and aldehydes represent two key classes of interstellar complex organic molecules (COMs). This work seeks to better understand their possible chemical connections, with a focus on such molecules in the sources of the star-forming ...
Christopher N. Shingledecker, Germán Molpeceres, A. Mackenzie Flowers, Deaton Warren, Emma Stanley, Anthony Remijan   +5 more
doaj   +1 more source

Direct Catalytic Asymmetric α-Amination of Aldehydes

, 2016
The first direct catalytic asymmetric α-amination of aldehydes is described herein. α-Unbranched aldehydes react in this novel proline-catalyzed reaction with dialkyl azodicarboxylates to give α-amino aldehydes in excellent yields and ...
Benjamin List (1505173)
core   +1 more source

N‐Geranylated Amino Acid Surfactants with Low Critical Micelle Concentrations from Abundant, Naturally Derived Starting Materials

ChemistryOpen
In this work, a simple method for the preparation of N‐alkylated amino acid surfactants in 1–2 steps is reported. These products perform comparably to existing ionic surfactants, with N‐tetrahydrogeranylated serine having a critical micelle concentration
Brett L. Pollard, Yumeng Liu, Michael G. Gardiner, Luke A. Connal   +3 more
doaj   +1 more source

Catalytic Asymmetric Reactions between Alkenes and Aldehydes [PDF]

, 2017
This doctoral work describes catalytic asymmetric reactions between alkenes and aldehydes, enabled by the development of chiral Brønsted acids. Valuable and functionalized enantiomerically enriched cyclic compounds were efficiently furnished from ...
Liu, L., Liu, Luping
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Chiral Allylsilane Additions to Chiral a-Substituted Aldehydes

, 1998
Chiral allylsilane 3 reacted with chiral alpha-methyl-beta-siloxy-aldehydes to afford the corresponding 1,4-syn-products with good diastereoselectivities independent of the absolute stereochemistry of these aldehydes.
Giacomini Rosana, Dias Luiz C.
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