Results 101 to 110 of about 1,208,360 (336)

METALATION OF ARYLMETHYL METHYL ETHERS AND CONNECTION WITH THEIR REDUCTIVE ELECTROPHILIC SUBSTITUTION

open access: yes, 1995
Stable alpha-methoxy arylmethyl carbanions can be generated by metalation of arylmethyl methyl ethers, 1, with n-BuLi in THF at -40 degrees C, avoiding Wittig rearrangement to the corresponding alkoxides 2.
S. DEMARTIS   +4 more
core   +1 more source

Nanocellulose Alleviates Intrahepatic Cholestasis of Pregnancy via Gut Microbiota‐Mediated Bile Acid Homeostasis

open access: yesAdvanced Science, EarlyView.
Nanocellulose, derived from microcrystalline cellulose (MCC) through sulfuric acid hydrolysis or mechanical grinding to produce CNC or CNF, was tested in a rat ICP model. Particularly, CNF improved gut microbiota composition, reduced secondary bile acid metabolism, and restored bile acid homeostasis through modulation of the gut–liver axis.
Muhua Yu   +18 more
wiley   +1 more source

Structure-spectra relationships of aliphatic methyl ethers and primary amines

open access: yes, 1971
For a series of methyl ethers, CH₃OR, the following properties have been measured: (a) the relative nmr chemical shifts, neat and in carbon tetrachloride solution, of the methyl protons, (b) the relative chemical shifts of the chloroform proton of ...
Mach, Edward Eugene
core  

Sex‐Specific Regulation of Glycemic Homeostasis by Theabrownin from Pu‐erh Tea

open access: yesAdvanced Science, EarlyView.
Pu‐erh tea's key component, theabrownin (TB), lowers blood glucose in a sex‐specific manner. In females, estrogen boosts intestinal MUC2 production, which dramatically enhances TB's ability to inhibit the carbohydrate‐digesting enzyme α‐glucosidase.
Yang Li   +22 more
wiley   +1 more source

Atmospheric Chemistry of 2-Methoxypropene and 2-Ethoxypropene: Kinetics and Mechanism Study of Reactions with Ozone

open access: yesAtmosphere, 2018
Rate coefficients at ambient temperature and atmospheric pressure for the reaction of ozone with 2-methoxypropene (2-MPE) and 2-ethoxypropene (2-EPE) were determined in an evacuable 100 L Teflon reaction chamber using absolute and relative rate methods ...
Chen Lv   +4 more
doaj   +1 more source

Improved procedure for the synthesis of methyl ethers from alcohols

open access: yes, 1999
260-263Alcohols can be conveniently converted to the corresponding methyl ethers with methyl iodide in the presence of KOH under solvent-free conditions.
Rao, H Surya Prakash   +3 more
core  

Avaliação da decomposição de Spartina alterniflora Loisel. com relação à perda de massa, teor de nitrogênio e composição lipídica, na Enseada de Ratones, Ilha de Santa Catarina/SC [PDF]

open access: yes, 2003
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemática. Programa de Pós-Graduação em Química.A decomposição de Spartina alterniflora Loisel.
Villela, Alexandre Nunes
core  

An Oxidation of Benzyl Methyl Ethers with NBS that Selectively Affords Either Aromatic Aldehydes or Aromatic Methyl Esters

open access: yes, 2016
Either mono- or dibromination of benzyl methyl ethers can be achieved by controlling the amount of NBS and the temperature. Elimination of methyl bromide from the monobrominated intermediates produces aromatic aldehydes, whereas hydrolysis of the ...
Mark Cushman (115145)   +2 more
core   +1 more source

Frustrated Lewis Pairs and Metallic Ni Synergistically Enabled Low‐Temperature Hydrogenolysis of Lignin Models

open access: yesAdvanced Science, EarlyView.
Nickel–aluminum composite oxide (NiAlOx‐300) derived from NiAl layered double hydroxide showed high activity for hydrogenolysis of various lignin models. Especially, hydrogenolysis of benzyl phenyl ether could be efficiently proceeded at 20°C and 1 MPa H2.
Jinpeng Liang   +9 more
wiley   +1 more source

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