نتایج جستجو برای: dialkyl acetylenedicarboxylate

تعداد نتایج: 1366  

2003
Jean Jacques Vanden Eynde Annie Mayence

Domestic microwave ovens as well as laboratory reactors have been successfully employed to prepare dialkyl 1,4-dihydropyridine-3,5-dicarboxylates and to induce the synthesis of the corresponding aromatic derivatives. In that latter particular case, unexpected results have been reported.

Journal: :Acta chimica Slovenica 2011
Robabeh Baharfar Najmeh Abbasi

Three-component reaction of dialkyl acetylenedicarboxylates, isocyanides and 1,3- diimino isoindoline affords highly functionalized 2,6-dihydropyrimido[2,1-a]isoindole derivatives in good yields under catalyst free and mild reaction conditions.

Journal: :European Journal of Organic Chemistry 2021

The Front Cover shows the one-pot procedure for introduction of aminoalkyl chain through dialkyl carbonate chemistry into different phenolic substrates. This green approach is a direct alcohol substitution that avoids use chlorine giving CO2 and ethanol as only reaction by-products. proposed has numerous potential applications N,N-dialkyl ethylamine moieties are incorporated in many pharmacopho...

2012
F. E. Adelowo

Some dialkyl alkylphosphonates and dialkyl phenylphosphonates were synthesized by the reactions between trialkyl phosphite and alkyl/aryl halide in the presence of benzene. The synthesized compounds were characterized by elemental analysis, thin layer chromatography (TLC), fourier –transform infrared, ( 1 H, 13 C) nuclear magnetic resonance (NMR) spectroscopic techniques. In vitro fungicidal ac...

Journal: :Dalton transactions 2014
Kevin R D Johnson Paul G Hayes

Geometrically constrained dioxaphospholane rings were incorporated into a bis(phosphinimine)carbazole ligand (HL) in an effort to generate an ancillary ligand system that is capable of supporting reactive lutetium alkyl functionalities and resistant to cyclometalation reactivity. This new ligand was used to prepare a lutetium dialkyl species, LLu(CH2SiMe3)2; however, the complex exhibited low t...

2014
Robert A. Izydore Joseph T. Jones Benjamin Mogesa Ira N. Swain Ronda G. Davis-Ward Dwayne L. Daniels Felicia Frazier Kpakima Sharnelle T. Spaulding-Phifer

The synthesis of the title compounds was carried out by reacting dicarboxylic acid chlorides with oximes in the presence of excess triethylamine. Disubstituted malonyl chlorides gave 2-alkenyl-4,4-dialkyl-3,5-isoxazolidinediones (8a-f) and 2,2'-ethylidene-bis[4,4-dialkyl-3,5-isoxazolidinedione]s (9a-f). Compounds 9 were formed from 8 and its N-unsubstituted 3,5-isoxazolidinedione decomposition ...

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