نتایج جستجو برای: diethyl malonate

تعداد نتایج: 5971  

2010
Zhi-Qiang Feng Xiao-Li Yang Yuan-Feng Ye Tao Dong Huai-Qing Wang

In the title compound, C(14)H(16)BrNO(4), inter-molecular C-H⋯O hydrogen bonds link the mol-ecules, forming a stable structure. An intra-molecular N-H⋯O hydrogen bond results in the formation of a six-membered ring and helps to establish the mol-ecular conformation which is almost planar, with an r.m.s deviation of 0.0842 Å.

Journal: :Acta Crystallographica Section E Structure Reports Online 2010

Fuping Liu, Ming Lu, Yan Zhu

The cycloalkylation of diethyl malonate and ethyl cyanoacetate with alkyl dihalide was investigated by using comminuted potassium carbonate as a base and toluene as a solvent in the presence of hexadecyltrimethylammonium bromide (HTMAB) as a phase-transfer catalyst, which provided a conventional procedure with the advantage of short reaction period and high product yield. The factors influencin...

Journal: :The Journal of the Society of Chemical Industry, Japan 1966

Journal: :Beilstein Journal of Organic Chemistry 2020

Journal: :Chemical communications 2015
Hong-Li Huang Hang Yan Chao Yang Wujiong Xia

A photocatalytic process for selective arylalkylation of allylic alcohols with α-bromo diethyl malonate has been developed. The reaction provided a straightforward approach to synthesize α-aryl-β-alkylated ketones via unique 1,2-aryl migration. The procedure is highlighted by its operational simplicity and mild reaction conditions.

Journal: :Organic & biomolecular chemistry 2014
Yulong Liu Xie Wang Xiaoyun Wang Wei He

Chalcones are still challenge substrates in Michael reactions, and only limited success has been achieved. This work describes a highly enantioselective Michael addition of diethyl malonate with chalcones catalyzed by cinchona alkaloids-derivatived bifunctional tertiary amine-thioureas bearing multiple hydrogen-bonding donors.

Journal: :Organic & biomolecular chemistry 2015
M Stefanelli F Mandoj S Nardis M Raggio F R Fronczek G T McCandless K M Smith R Paolesse

The insertion of a -NO2 group onto the corrole framework represents a key step for subsequent synthetic manipulation of the macrocycle based on the chemical versatility of such a functionality. Here we report results of the investigation of a copper 3-NO2-triarylcorrolate in nucleophilic aromatic substitution reactions with "active" methylene carbanions, namely diethyl malonate and diethyl 2-ch...

2000
Stanislaw F. Wnuk Elzbieta Lewandowska Carlos A. Valdez Stefan Kinastowski

ÐKnoevenagel condensation between 3-nitro-2-pyridinecarbaldehyde and diethyl malonate catalyzed by titanium(IV) chloride gave diethyl 3-nitro-2-pyridylidenemalonate which was oxidized with peracetic acid to give corresponding 1-oxide. Reaction of the latter with diethylamine in the presence of primary and secondary alcohols resulted in the reduction of the nitro group and the oxidation of the v...

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