Tetrazole-1-acetic acid as a ligand for copper-catalyzed N-arylation of imidazoles with aryl iodides under mild conditions

2013 ◽  
Vol 24 (10) ◽  
pp. 893-896 ◽  
Author(s):  
Feng-Tian Wu ◽  
Ping Liu ◽  
Xiao-Wei Ma ◽  
Jian-Wei Xie ◽  
Bin Dai
Keyword(s):  
Acetic Acid ◽  
Mild Conditions ◽  
Aryl Iodides

ChemInform Abstract: Tetrazole-1-acetic Acid as a Ligand for Copper-Catalyzed N-Arylation of Imidazoles with Aryl Iodides under Mild Conditions.

ChemInform ◽  
2014 ◽  
Vol 45 (6) ◽  
pp. no-no
Author(s):  
Feng-Tian Wu ◽  
Ping Liu ◽  
Xiao-Wei Ma ◽  
Jian-Wei Xie ◽  
Bin Dai
Keyword(s):  
Acetic Acid ◽  
Mild Conditions ◽  
Aryl Iodides

An unusual reaction of a bridged triterpenoid α-diketone with acetic anhydride

1991 ◽  
Vol 56 (12) ◽  
pp. 2917-2935 ◽  
Author(s):  
Eva Klinotová ◽  
Václav Křeček ◽  
Jiří Klinot ◽  
Miloš Buděšínský ◽  
Jaroslav Podlaha ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Nmr Spectroscopy ◽  
Acetic Anhydride ◽  
Spectral Methods ◽  
X Ray Diffraction ◽  
X Ray ◽  
Mild Conditions ◽  
Condensation Products ◽  
Unsaturated Lactones ◽  
C Nmr

3β-Acetoxy-21,22-dioxo-18α,19βH-ursan-28,20β-olide (IIIa) reacts with acetic anhydride in pyridine under very mild conditions affording β-lactone IVa and γ-lactones Va and VIIa as condensation products. On reaction with pyridine, lactones Va and VIIa undergo elimination of acetic acid to give unsaturated lactones VIIIa and IXa, respectively. Similarly, the condensation of 20β,28-epoxy-21,22-dioxo-18α,19βH-ursan-3β-yl acetate (IIIb) with acetic anhydride leads to β-lactone IVb and γ-lactone Vb; the latter on heating with pyridine affords unsaturated lactone VIIIb and 21-methylene-22-ketone Xb. The structure of the obtained compounds was derived using spectral methods, particularly 1H and 13C NMR spectroscopy; structure of lactone IVa was confirmed by X-ray diffraction.

scholarly journals Nickel-Catalyzed Asymmetric Reductive Cross-Coupling of α-Chloroesters with (Hetero)Aryl Iodides

2021 ◽  
Author(s):  
Travis DeLano ◽  
Sara Dibrell ◽  
Caitlin R. Lacker ◽  
Adam Pancoast ◽  
Kelsey Poremba ◽  
...  
Keyword(s):  
Cross Coupling ◽  
Mild Conditions ◽  
Aryl Iodides ◽  
Reaction Proceeds

An asymmetric reductive cross-coupling of α-chloroesters and (hetero)aryl iodides is reported. This nickel-catalyzed reaction proceeds with a chiral BiOX ligand under mild conditions, affording α-arylesters in good yields and enantioselectivities....

scholarly journals Palladium-catalyzed difluoromethylthiolation of heteroaryl bromides, iodides, triflates and aryl iodides

2016 ◽  
Vol 7 (6) ◽  
pp. 3757-3762 ◽  
Author(s):  
Jiang Wu ◽  
Yafei Liu ◽  
Changhui Lu ◽  
Qilong Shen
Keyword(s):  
Mild Conditions ◽  
Aryl Iodides ◽  
Palladium Catalyzed

A palladium-catalyzed difluoromethylthiolation of heteroaryl halides and triflates under mild conditions was described.

scholarly journals Highly efficient epoxidation of vegetable oils catalyzed by a manganese complex with hydrogen peroxide and acetic acid

2019 ◽  
Vol 21 (9) ◽  
pp. 2436-2447 ◽  
Author(s):  
Jianming Chen ◽  
Marc de Liedekerke Beaufort ◽  
Lucas Gyurik ◽  
Joren Dorresteijn ◽  
Matthias Otte ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Acetic Acid ◽  
Vegetable Oils ◽  
Manganese Complex ◽  
Mild Conditions ◽  
Highly Efficient ◽  
Catalytic Epoxidation

A highly efficient catalytic epoxidation of vegetable oils under mild conditions was developed, using a homogeneous Mn catalyst and H2O2 as oxidant.

Peptide syntheses with the 2,4,6-trimethylbenzyl esters of L-asparagine and L-glutamine

1967 ◽  
Vol 20 (2) ◽  
pp. 365 ◽  
Author(s):  
FHC Stewart
Keyword(s):  
Acetic Acid ◽  
Amino Acid ◽  
Hydrogen Chloride ◽  
Hydrogen Bromide ◽  
Amino Acid Esters ◽  
Mild Conditions ◽  
Acid Esters

The 2,4,6-trimethylbenzyl esters of L-asparagine and L-glutamine have been obtained as the crystalline hydrochlorides by treatment of the o- nitrophenylsulphenyl amino acid esters with methanolic hydrogen chloride. These hydrochlorides were used in the synthesis of several benzyloxycarbonyl peptide 2,4,6-trimethylbenzyl esters, which were converted into the corresponding free peptides by the action of hydrogen bromide in acetic acid under mild conditions.

scholarly journals One-Pot Reductive Acetylation of Aldehydes using 1-Hydrosilatrane in Acetic Acid

SynOpen ◽  
2019 ◽  
Vol 03 (01) ◽  
pp. 1-3 ◽  
Author(s):  
Reuben James ◽  
Sharon Herlugson ◽  
Sami Varjosaari ◽  
Vladislav Skrypai ◽  
Zainab Shakeel ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Organic Synthesis ◽  
Functional Group ◽  
Building Blocks ◽  
Flash Chromatography ◽  
Primary Alcohols ◽  
Facile Synthesis ◽  
One Pot ◽  
Aryl Aldehydes ◽  
Mild Conditions

A one-pot, direct reductive acetylation of aldehydes was achieved under mild conditions using 1-hydrosilatrane as a safe and easily accessible catalyst. Described herein is a facile synthesis that produces acylated primary alcohols that can serve as valuable building blocks for organic synthesis. The method has good functional group tolerance and works for a range of aryl aldehydes, with the notable exception of electron-rich arenes. A library of esters was isolated by flash chromatography in yields as high as 92%.

scholarly journals Mild and Efficient Oxidation of Aromatic Alcohols and Other Substrates Using NiO2/CH3COOH System

2008 ◽  
Vol 5 (2) ◽  
pp. 365-369
Author(s):  
Mohammad Kooti ◽  
Mehdi Jorfi
Keyword(s):  
Acetic Acid ◽  
Mild Conditions ◽  
Aromatic Alcohols ◽  
Aldehydes And Ketones

A variety of aromatic alcohols were efficiently oxidized to their corresponding aldehydes and ketones in good to excellent yields using nickel peroxide activated by acetic acid. Some thiols and amines were also readily oxidized by this oxidant under mild conditions.

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