scholarly journals Polyvinylpolypyrrolidone-Supported Boron Trifluoride; Highly Efficient Catalyst for the Synthesis ofN-tert-Butyl Amides

2012 ◽  
Vol 9 (2) ◽  
pp. 576-582 ◽  
Author(s):  
Masoud Mokhtary ◽  
Faranak Najafizadeh
Keyword(s):  
Lewis Acid ◽  
Efficient Method ◽  
Boron Trifluoride ◽  
Butyl Acetate ◽  
Acid Property ◽  
Solid Catalyst ◽  
Efficient Catalyst ◽  
Tert Butyl ◽  
Highly Efficient ◽  
Boron Trifluoride Complex

Highly efficient method for the preparation ofN-tert-butyl amides by reaction of nitriles withtert-butyl acetate is described using polyvinylpolypyrrolidone-supported boron trifluoride (PVPP-BF3) at 70°C in good to excellent yields. Selective amidation of benzonitrile in the presence of acetonitrile was also achieved. polyvinylpolypyrrolidone-boron trifluoride complex shows non-corrosive and stable solid catalyst elevated Lewis acid property.

Zirconyl Nitrate as an Efficient Catalyst for Facile Synthesis of 2-Aryl-2,3-dihydroquinolin-4(1H)-one Derivatives in Aqueous ­Medium

Synlett ◽  
2017 ◽  
Vol 29 (02) ◽  
pp. 235-237
Author(s):  
Amarsinha Gorepatil ◽  
Pratapsinha Gorepatil ◽  
Mahadev Gaikwad ◽  
Dattakumar Mhamane ◽  
Ajit Phadkule ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Intramolecular Cyclization ◽  
Lewis Acid ◽  
Efficient Method ◽  
Acid Catalyst ◽  
Facile Synthesis ◽  
Zirconyl Nitrate ◽  
Reaction Conditions ◽  
Efficient Catalyst ◽  
Lewis Acid Catalyst

A simple, green, and efficient method is introduced for the synthesis of 2-aryl-2,3-dihydroquinolin-4(1H)-ones under mild reaction conditions with improved yields by intramolecular cyclization of o-aminochalcones with zirconyl nitrate [Zn(O)(NO3)2·nH2O] as a water-tolerant Lewis-acid catalyst.

scholarly journals An Efficient Method for Synthesis of N-tert-Butyl Amides Using Oxalic Acid Dihydrate in Solvent-Free Condition

2014 ◽  
Vol 2014 ◽  
pp. 1-4
Author(s):  
Masoud Mokhtary ◽  
Seyedeh Khadijeh Nasernezhad
Keyword(s):  
Oxalic Acid ◽  
Efficient Method ◽  
Butyl Acetate ◽  
Solvent Free ◽  
Free Condition ◽  
Oxalic Acid Dihydrate ◽  
Tert Butyl ◽  
Solvent Free Condition

An efficient method for the synthesis of N-tert-butyl amides by reaction of nitriles with tert-butyl acetate or tert-butanol is described using oxalic acid dihydrate in solvent-free condition. The result showed that tert-butyl acetate served as a relatively better source of tert-butyl carbocation than tert-butanol.

Boron trifluoride monohydrate, a highly efficient catalyst for thioacetalrzation [1]

1992 ◽  
Vol 13 (1-2) ◽  
pp. 55-59 ◽  
Author(s):  
George A. Olah ◽  
Qi Wang ◽  
G. K. Surya Prakash
Keyword(s):  
Boron Trifluoride ◽  
Efficient Catalyst ◽  
Highly Efficient

Al(OTf)3 — A highly efficient catalyst for the tetrahydropyranylation of alcohols under solvent-free conditions

2008 ◽  
Vol 86 (12) ◽  
pp. 1099-1104 ◽  
Author(s):  
Ahmed Kamal ◽  
M Naseer A Khan ◽  
Y VV Srikanth ◽  
K Srinivasa Reddy
Keyword(s):  
Comparative Study ◽  
Efficient Method ◽  
Catalytic Amount ◽  
Solvent Free ◽  
Molar Ratio ◽  
Reaction Conditions ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Solvent Free Conditions ◽  
The Comparative Study

A simple and highly efficient method has been developed for the tetrahydropyranylation of alcohols by their reaction with 3,4-dihydro-2H-pyran (DHP) using a catalytic amount (0.01–1 mol%) of aluminium triflate under solvent-free conditions. The effect of various factors like temperature, amount of the catalyst, and molar ratio of substrates on the reaction conditions has also been studied. The comparative study of tetrahydropyranylation of benzyl alcohol using various catalysts including some reported ones shows the efficiency of this catalyst.Key words: tetrahydropyranylation, aluminium triflate, alcohols, catalysis.

WOx/ZrO2: A highly efficient catalyst for alkylation of catechol with tert-butyl alcohol

2013 ◽  
Vol 378 ◽  
pp. 22-29 ◽  
Author(s):  
Arun Kumar ◽  
Asraf Ali ◽  
K.N. Vinod ◽  
Amit Kumar Mondal ◽  
Hemant Hegde ◽  
...  
Keyword(s):  
Butyl Alcohol ◽  
Efficient Catalyst ◽  
Tert Butyl ◽  
Highly Efficient ◽  
Tert Butyl Alcohol
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