scholarly journals Pentafluoropropionic Acid: An Efficient and Metal-Free Catalyst for the One-Pot Synthesis of Tetrahydrobenzo[b]pyran Derivatives

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Naser Montazeri ◽  
Taghva Noghani ◽  
Mona Ghorchibeigy ◽  
Rozita Zoghi
Keyword(s):  
Reaction Time ◽  
Aromatic Aldehyde ◽  
One Pot ◽  
Short Reaction Time ◽  
Metal Free ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
The One ◽  
High Yields

Pentafluoropropionic acid (PFPA) efficiently catalyzes the one-pot, three-component reaction of aromatic aldehyde, malononitrile, and dimedone to yield tetrahydrobenzo[b]pyran derivatives in high yields. This method is of great value because of its easy processing, short reaction time, environmentally, and high yields.

scholarly journals Calcium hydroxide: An efficient and mild base for one-pot synthesis of curcumin and it’s analogues

2013 ◽  
Vol 6 (1) ◽  
pp. 150-156
Author(s):  
Pramod S. Kulkarni ◽  
Dasharath D. Kondhare ◽  
Ravi Varala ◽  
Pudukulathan K. Zubaidha
Keyword(s):  
Calcium Hydroxide ◽  
Aromatic Aldehyde ◽  
One Pot ◽  
Acetyl Acetone ◽  
One Pot Synthesis ◽  
The One ◽  
High Yields

Abstract Calcium hydroxide was found to be an efficient mild base for the one-pot synthesis of curcumin and its analogues obtained by condensation of one equivalent of acetyl acetone with two equivalents of corresponding aromatic aldehyde. The present protocol offers various advantages such as high yields, inexpensive easily available mild base, easy workup and eco-friendly method.

Synthesis of a series of novel 2,3-dihydrofuranonaphthoquinone derivatives

2017 ◽  
Vol 41 (8) ◽  
pp. 448-451 ◽  
Author(s):  
Maryam Salari ◽  
Mohammad H. Mosslemin ◽  
Alireza Hassanabadi
Keyword(s):  
Reaction Time ◽  
Green Chemistry ◽  
Organic Solvent ◽  
Aromatic Aldehyde ◽  
Efficient Synthesis ◽  
One Pot ◽  
Short Reaction Time ◽  
Highly Efficient ◽  
One Pot Condensation ◽  
High Yields

A green and highly efficient synthesis of 12 novel trans-2-(4-chlorobenzoyl)-3-aryl-2,3-dihydronaphtho[2,3- b]furan-4,9-diones has been achieved via a three-component, one-pot condensation of 2-[2-(4-chlorophenyl)-2-oxoethyl)]isoquinolinium bromide with 2-hydroxy-1,4-naphthoquinone and an aromatic aldehyde in the presence of catalytic amounts of choline hydroxide in water under reflux conditions. The advantages of this method are a short reaction time, high yields and the avoidance of any hazardous organic solvent. Therefore, this procedure can be classified as green chemistry.

One-Pot Synthesis of Tetraazamacrocyclic Complexes from the Arnold Salt

Synthesis ◽  
2018 ◽  
Vol 50 (24) ◽  
pp. 4958-4962 ◽  
Author(s):  
Mateusz Woźny
Keyword(s):  
Reaction Time ◽  
One Pot ◽  
Aqueous Synthesis ◽  
Short Reaction Time ◽  
Major Improvement ◽  
Product Separation ◽  
Stepwise Procedure ◽  
The One ◽  
High Yields ◽  
Time Ease

We present an improved synthesis of bis(hexafluorophosphate) Arnold salt, which is a synthon of triformylmethane. The salt is shown to be a substrate for the one-pot, aqueous synthesis of macro­cyclic tetraiminato complexes of copper(II) and nickel(II). The synthesis of complexes is a major improvement over the original stepwise procedure, and is characterized by short reaction time, ease of product separation, scalability, and high yields.

scholarly journals Scolecite as an efficient heterogeneous catalyst for the synthesis of 2,4,5-triarylimidazoles

2009 ◽  
Vol 7 (3) ◽  
pp. 550-554 ◽  
Author(s):  
Lakshman Gadekar ◽  
Shivshankar Mane ◽  
Santosh Katkar ◽  
Balasaheb Arbad ◽  
Machhindra Lande
Keyword(s):  
Heterogeneous Catalyst ◽  
Ammonium Acetate ◽  
Environmentally Benign ◽  
One Pot ◽  
Effective Catalyst ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
The One ◽  
High Yields ◽  
Efficient Heterogeneous Catalyst

AbstractNatural scolecite has been found as an effective catalyst for the one-pot synthesis of 2,4,5-triarylimidazole derivatives via a three component reaction using benzil or benzoin, aldehydes and ammonium acetate. This method provides several advantages such as being environmentally benign, reusable, possessing high yields with increased variations of the substituents in the product and preparative simplicity.

PhI(OAc)2-Mediated One-Pot Synthesis of Benzoxazinones from Anthranilic Acids and Aromatic Aldehydes

2012 ◽  
Vol 36 (3) ◽  
pp. 123-126 ◽  
Author(s):  
Yuanyuan Xie ◽  
Suping Wang
Keyword(s):  
Reaction Time ◽  
Schiff Bases ◽  
Aromatic Aldehyde ◽  
Anthranilic Acid ◽  
Aromatic Aldehydes ◽  
Reaction Conditions ◽  
One Pot ◽  
Short Reaction Time ◽  
One Pot Synthesis ◽  
Anthranilic Acids

A novel way to synthesise 2-aryl-4H-benzo[d][1,3]oxazin-4-ones has been developed by the cyclisation of Schiff bases with (diacetoxyiodo)benzene. The salient features of this new protocol which starts from an anthranilic acid and an aromatic aldehyde, are short reaction time, mild reaction conditions and good yields.

scholarly journals ZnO as an Efficient and Inexpensive Catalyst for One Pot Synthesis of 2, 4, 5 -Triphenyl-1H- imidazole Derivatives at Room Temperature

2011 ◽  
Vol 8 (3) ◽  
pp. 1339-1345 ◽  
Author(s):  
Babasaheb P. Bandgar ◽  
Baliram S. Hote ◽  
Balaji L. Korbad ◽  
Sachin A. Patil
Keyword(s):  
Reaction Time ◽  
Aromatic Aldehyde ◽  
Room Temperature ◽  
Synthetic Methods ◽  
High Yield ◽  
One Pot ◽  
Short Reaction Time ◽  
Reaction Condition ◽  
One Pot Synthesis ◽  
Environmental Friendly

An improved and rapid one pot synthesis of 2,4,6-triphenyl-1H-imidazoles on condensation with benzil, aromatic aldehyde and NH4OAc has been carried out using ZnO as an efficient and inexpensive catalyst in high yield at room temperature. The short reaction time, good yields (60-93%), environmental friendly procedure, mild reaction condition and convenient operation are important advantage of these synthetic methods.

Two Efficient One-Pot Approaches for Regioselective Synthesis of New 3-Arylpyridazino[4,3-c]quinolin-5(6H)-ones

2015 ◽  
Vol 68 (10) ◽  
pp. 1529 ◽  
Author(s):  
Mehdi Rimaz
Keyword(s):  
Hydrazine Hydrate ◽  
Regioselective Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
One Pot Synthesis ◽  
Three Component Reaction ◽  
The One ◽  
High Yields ◽  
Arylglyoxal Monohydrates ◽  
Operational Simplicity

Two efficient regioselective approaches for the one-pot synthesis of 3-arylpyridazino[4,3-c]quinolin-5(6H)-one derivatives are reported, by the three-component reaction of arylglyoxal monohydrates, quinoline-2,4-diol, and hydrazinium dihydrochloride or hydrazine hydrate in ethanol and pyridine. In ethanol, the reactions were catalyzed by 1,4-diazobicyclo[2,2,2]octane. The features of both procedures are high regioselectivity, mild reaction conditions, good to high yields, and operational simplicity.

Iodine-Mediated Multi-Component Reactions: Readily Access to Tetrazoles and Guanidines

2020 ◽  
Vol 17 ◽  
Author(s):  
Bajivali Shaik ◽  
Mohan Seelam ◽  
Ramana Tamminana ◽  
Prasad Rao Kammela
Keyword(s):  
Reaction Time ◽  
Benzoyl Chloride ◽  
Functional Group ◽  
Molecular Iodine ◽  
Environmentally Benign ◽  
Reaction Conditions ◽  
One Pot ◽  
Short Reaction Time ◽  
One Pot Synthesis ◽  
High Yields

Abstract: Environmentally benign syntheses of One-pot sequential reactions of benzoyl chloride with amines followed by the treatment of molecular I2 reagent under basic conditions provide benzoyl tetrazoles and guanidines in moderate to excel-lent yields. This one-pot synthesis has several advantages such as mild reaction conditions, short reaction time, convenient workup, high yields, using cheap and readily available reagent molecular Iodine. In addition, functional group tolerance has been explored

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