scholarly journals One-Pot Synthesis of 2′-Aminobenzothiazolo-Arylmethyl-2-Naphthols Catalyzed by NBS under Solvent-Free Conditions

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Wei Lin Li ◽  
Li Li Wang ◽  
Qiu Yan Luo
Keyword(s):  
Aromatic Aldehydes ◽  
Solvent Free ◽  
One Pot ◽  
Efficient Catalyst ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
The One ◽  
Naphthol Derivatives

To develop a new facile protocol for the synthesis of 2′-aminobenzothiazolo-arylmethyl-2-naphthol derivatives, N-bromosuccinimide (NBS) was used as an efficient catalyst for the one-pot synthesis of 2′-aminobenzothiazolo-arylmethyl-2-naphthols in excellent yields fromβ-naphthol (1 mmol), aromatic aldehydes (1 mmol), and 2-aminobenzothiazole (1 mmol) at 60°C under solvent-free conditions.

scholarly journals K2CO3: A Mild and Efficient Catalyst for the Synthesis of Pyran Annulated Heterocyclic Systems by Grinding Method Under Solvent-Free Conditions

2017 ◽  
Vol 25 (2) ◽  
pp. 163-178 ◽  
Author(s):  
Reza Heydari ◽  
Rohollah Rahimi ◽  
Mehrnoosh Kangani ◽  
Afshin Yazdani-Elah-Abadi ◽  
Mojtaba Lashkari
Keyword(s):  
Room Temperature ◽  
Reaction Times ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Synthetic Methods ◽  
One Pot ◽  
Efficient Catalyst ◽  
Grinding Method ◽  
Solvent Free Conditions ◽  
The One

Abstract The potassium carbonate was applied as a green and efficient catalyst for the one-pot synthesis of pyran annulated heterocyclic systems, via the condensation between aromatic aldehydes, malononitrile and dimedone/1-naphtole by a grinding method at room temperature and solvent-free conditions. Short reaction times, environmentally friendly procedure and excellent yields are the main advantages of this procedure which makes it more economic than other environmentally synthetic methods.

scholarly journals Trichloroisocyanuric acid, a New and Efficient Catalyst for the Synthesis of 2′- Aminobenzothiazolo-arylmethyl-2-naphthols

2012 ◽  
Vol 9 (4) ◽  
pp. 2424-2428 ◽  
Author(s):  
Limin Yang
Keyword(s):  
Aromatic Aldehydes ◽  
Catalytic Amount ◽  
Solvent Free ◽  
One Pot ◽  
Efficient Catalyst ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Three Component Reaction ◽  
Trichloroisocyanuric Acid

An efficient one-pot synthesis of 2′-aminobenzothiazolo-arylmethyl-2-naphthols is described. This involves the three-component reaction ofβ-naphthol, aromatic aldehydes and 2-aminobenzothiazole in the presence of a catalytic amount of trichloroisocyanuric acid under solvent-free conditions.

scholarly journals Melamine Trisulfonic Acid: An Efficient, Heterogeneous and Reusable Catalyst for the Synthesis of 10-Aryl-6,8-dimethyl- 6, 10-dihydro-5-oxa-6,8-diazaanthra [2,3-d][1,3]dioxole- 7,9-diones

2011 ◽  
Vol 8 (4) ◽  
pp. 1972-1978 ◽  
Author(s):  
Weilin Li ◽  
Qiuyan Luo
Keyword(s):  
Aromatic Aldehydes ◽  
Recyclable Catalyst ◽  
Solvent Free ◽  
Reusable Catalyst ◽  
One Pot ◽  
One Pot Synthesis ◽  
Solvent Free Conditions ◽  
Different Types ◽  
The One ◽  
Melamine Trisulfonic Acid

Melamine trisulfonic acid was used as an efficient and recyclable catalyst for the one-pot synthesis of 10-aryl-6,8-dimethyl-6,10-dihydro-5-oxa-6,8-diazaanthra[2,3-d][1,3]dioxole-7,9-diones by condensation of 3,4-methylene dioxyphenol, aromatic aldehydes and 1,3-dimethylbarbituric acid under solvent-free conditions. Different types of aromatic. aldehydes were used in the reaction and in all cases the products were obtained in good to excellent yields.

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