Results 21 to 30 of about 239 (169)

Diterpenos casbanos e acetofenonas de Croton nepetaefolius (Euphorbiaceae) Casbane diterpenes and acetophenones of Croton nepetaefolius (Euphorbiaceae)

open access: yesQuímica Nova, 2008
Croton nepetaefolius is an aromatic plant native to the northeast of Brazil where it is extensively used in folk medicine as a sedative, orexigen and antispasmodic agent.
Hélcio Silva Santos   +4 more
doaj   +1 more source

On the Reaction of Quinazoline with Acetophenone

open access: yesChemical and Pharmaceutical Bulletin, 1964
Carbanion reacted as nucleophilic reagent with quinazoline. Reaction of quinazoline with acetophenone in the presence of sodium hydroxide solution at room temperature afforded 2-(3, 4-dihydro-4-quinazolinyl)acetophenone. The mechanism for this reaction may be suggested as in Chart 1 in the text.
Hayashi, Eisaku, Higashino, Takeo
openaire   +3 more sources

Synthesis of functionalised acetophenone

open access: yesJournal of Chemical Research, 2006
Nickel catalysed Heck arylation of the electron-rich olefin n-butyl vinyl ether with a wide variety of aryl bromides has been accomplished in the ionic liquid [bmim][BF 4 ], affording an efficient green chemistry synthetic procedure for preparing functionalised acetophenone. The reaction gave
Li Sun, Wen Pei, Chen Shen
openaire   +1 more source

Lichtreaktionen des Cinnamyliden‐acetophenons [PDF]

open access: yesBerichte der deutschen chemischen Gesellschaft, 1911
n ...
Stobbe, Hans, Rücker, Conrad
openaire   +2 more sources

The Chemoselective Fischer’s Synthesis of Indolenine Derivatives By iso-Butyric Acid As A Weak Organic Acid Catalyst [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2019
Iso-butyric acid as a new, simple, and expensive solvent/catalyst was successfully used for the chemoselective Fischer’s synthesis of indolenines derivatives 3a-r by one-pot condensation reaction of various phenylhydrazines 1a-e with the substituted ...
sami sajjadifar   +4 more
doaj   +1 more source

Microbial degradation of chlorinated acetophenones [PDF]

open access: yesApplied and Environmental Microbiology, 1993
A defined mixed culture, consisting of an Arthrobacter sp. and a Micrococcus sp. and able to grow with 4-chloroacetophenone as a sole source of carbon and energy, was isolated. 4-Chlorophenyl acetate, 4-chlorophenol, and 4-chlorocatechol were identified as metabolites through comparison of retention times and UV spectra with those of standard ...
J, Havel, W, Reineke
openaire   +2 more sources

Cobalt‐Catalyzed Asymmetric Construction of Boron Stereocenters With C–N Axial Chirality

open access: yesAdvanced Science, EarlyView.
A cobalt/Salox‐catalyzed one‐pot annulation enables enantioselective formation of B‐stereogenic centers and C─N axial chirality via C─H/N─H annulation, affording diverse fluorescent products with high stereocontrol and optoelectronic potential. ABSTRACT The efficient construction of boron stereogenic centers alongside axial chirality remains a ...
Subramani Kumaran   +5 more
wiley   +1 more source

Iodine-mediated synthesis of 3-acylbenzothiadiazine 1,1-dioxides

open access: yesBeilstein Journal of Organic Chemistry, 2016
An iodine-mediated synthesis of 3-acylbenzothiadizine 1,1-dioxides is described. A range of electronically diverse acetophenones reacted well with several 2-aminobenzenesulfonamides, affording 3-acylbenzothiadiazine 1,1-dioxides in good yields.
Long-Yi Xi   +4 more
doaj   +1 more source

Photocatalytic Recovery of Aromatic Chemicals from Waste Plastics

open access: yesAdvanced Science, EarlyView.
This Review summarizes recent advances in the photocatalytic recovery of aromatic chemicals from plastic waste, with emphasis on fundamental mechanism, representative catalytic systems, and future challenges and development directions, which is expected to provide in‐depth and valuable insights and references into the key role of sustainable catalysis ...
Lizhen Liu, Jutarat Jitrada, Jun Huang
wiley   +1 more source

Inhibitory Effects of Stilbene Derivatives from on Adipocyte Differentiation and Pancreatic Lipase

open access: yesNatural Product Communications, 2013
Obesity, which is characterized by excessive fat accumulation, occurs by fat absorption by lipase and sequential fat accumulation in adipocytes through adipocyte differentiation.
Sang Hoon Lee   +3 more
doaj   +1 more source

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