ChemInform Abstract: Reactions of Ylides Formed from Trialkyl Phosphites with Dialkyl Acetylenedicarboxylates in the Presence of Carbon Dioxide.

ChemInform ◽  
1990 ◽  
Vol 21 (48) ◽  
Author(s):  
J. C. CAESAR ◽  
D. V. GRIFFITHS ◽  
P. A. GRIFFITHS ◽  
J. C. TEBBY
Keyword(s):  
Carbon Dioxide ◽  
Dialkyl Acetylenedicarboxylates ◽  
Trialkyl Phosphites

Stereoselective synthesis of 3-[2-(dialkoxyphosphoryl)-1,2-dialkoxycarbonyl-ethyl]-4-hydroxycoumarins by reaction between trialkyl phosphites, dialkyl acetylenedicarboxylates and 4-hydroxycoumarin

2009 ◽  
Vol 2009 (5) ◽  
pp. 319-321 ◽  
Author(s):  
Mohammad Anary-Abbasinejad ◽  
Khadijeh Charkhati ◽  
Alireza Hassanabadi
Keyword(s):  
Stereoselective Synthesis ◽  
Dialkyl Acetylenedicarboxylates ◽  
Three Component Reaction ◽  
Trialkyl Phosphites ◽  
Efficient Route ◽  
High Yields

A three-component reaction between trialkyl phosphites, dialkyl acetylenedicarboxylates and 4-hydroxycoumarin is described as a simple and efficient route for the synthesis of 3-[2-(dialkoxyphosphoryl)-1,2-dialkoxycarbonyl-ethyl]-4-hydroxycoumarins in high yields.

Synthesis of functionalized benzene using Diels–Alder reaction of activated acetylenes with synthesized phosphoryl-2-oxo-2H-pyran

2015 ◽  
Vol 70 (5) ◽  
pp. 355-360 ◽  
Author(s):  
Zinatossadat Hossaini ◽  
Faramarz Rostami-Charati ◽  
Fatemeh Sheikholeslami-Farahani ◽  
Mahboubeh Ghasemian
Keyword(s):  
Good Yield ◽  
Alder Reaction ◽  
Diels Alder ◽  
Benzene Derivatives ◽  
One Pot ◽  
Dialkyl Acetylenedicarboxylates ◽  
Diels Alder Reaction ◽  
Alkyl Bromides ◽  
Solvent Free Conditions ◽  
Trialkyl Phosphites

AbstractAn effective one-pot synthesis of benzene derivatives using a Diels–Alder reaction of activated acetylenes with phosphoryl-2-oxo-2H-pyrans is described. The latter compounds were synthesized in good yield via the reaction of dialkyl acetylenedicarboxylates and alkyl bromides in the presence of trialkyl phosphites under solvent-free conditions at 50 oC.

scholarly journals Ionic Liquid-Mediated, RapidN-Alkylation of Heterocyclic Compounds with Trialkyl Phosphites in the Presence of Dialkyl Acetylenedicarboxylates

2012 ◽  
Vol 9 (4) ◽  
pp. 2074-2078
Author(s):  
Alireza Hassanabadi ◽  
Mohammad H. Mosslemin ◽  
Mohammad Anary-Abbasinejad ◽  
Azadeh Kalantarinejad ◽  
Mozhdeh Jerjisi Shirazi
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Heterocyclic Compounds ◽  
Dialkyl Acetylenedicarboxylates ◽  
Trialkyl Phosphites

Ionic liquids such as 1,3-dialkylimidazolium bromides and make excellent solvents forN-alkylation of heterocyclic compounds such as saccharin and rhodanine with trialkyl phosphites in the presence of dialkyl acetylenedicarboxylates.

Electron Cytochemical Study of Carbon Dioxide Laser Effect on Rhesus Monkey Cornea

1974 ◽  
Vol 32 ◽  
pp. 224-225
Author(s):  
K. C. Tsou ◽  
J. Morris ◽  
P. Shawaluk ◽  
B. Stuck ◽  
E. Beatrice
Keyword(s):  
Carbon Dioxide ◽  
Electron Microscope ◽  
Rhesus Monkey ◽  
Carbon Dioxide Laser ◽  
Cytochemical Study ◽  
Laser Effect

While much is known regarding the effect of lasers on the retina, little study has been done on the effect of lasers on cornea, because of the limitation of the size of the material. Using a combination of electron microscope and several newly developed cytochemical methods, the effect of laser can now be studied on eye for the purpose of correlating functional and morphological damage. The present paper illustrates such study with CO2 laser on Rhesus monkey.

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