scholarly journals Green synthesis of new lawsone enaminones and their Z/E(CC)-isomerization induced by organic solvent

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12990-12994
Author(s):  
Abolfazl Olyaei ◽  
Amir Mohamadi ◽  
Nilufar Rahmani
Keyword(s):  
Organic Solvent ◽  
Green Synthesis ◽  
Aromatic Amines ◽  
Solvent Free ◽  
Triethyl Orthoformate ◽  
Guanidinium Chloride ◽  
New Class ◽  
Solvent Free Conditions

The synthesis of a new class of lawsone enaminone derivatives by using lawsone, triethyl orthoformate and aromatic amines in the presence of guanidinium chloride under solvent-free conditions has been developed.

Silica gel induced cleavage of aziridines by aromatic amines under solvent free conditions

2002 ◽  
Vol 43 (22) ◽  
pp. 3975-3976 ◽  
Author(s):  
R.Vijaya Anand ◽  
Ghanshyam Pandey ◽  
Vinod K. Singh
Keyword(s):  
Silica Gel ◽  
Aromatic Amines ◽  
Solvent Free ◽  
Solvent Free Conditions

Rapid and Green One-Pot Synthesis of Novel 2-(4-Hydroxy-2-oxo-2H-chromen-3-yl)-2-(arylamino)-1H-indene-1,3(2H)-diones

2021 ◽  
Vol 18 ◽  
Author(s):  
Abolfazl Olyaei ◽  
Zahra Ghahremany ◽  
Madieh Sadeghpour
Keyword(s):  
Aromatic Amines ◽  
Low Cost ◽  
Guanidine Hydrochloride ◽  
Reaction Times ◽  
Solvent Free ◽  
One Pot ◽  
Solvent Free Conditions ◽  
The One ◽  
High Yields ◽  
Work Up

: A green and efficient protocol was developed for the one-pot three-component synthesis of novel 2-(4-hydroxy-2-oxo-2H-chromen-3-yl)-2-(arylamino)-1H-indene-1,3(2H)-dione derivatives by the reaction of 4-hydroxycoumarin, ninhydrin and aromatic amines in the presence of guanidine hydrochloride as an organocatalyst under solvent-free conditions. The present approach offers several advantages such as low cost, simple work-up, short reaction times, chromatography-free purification, high yields and greener conditions.

A novel reusable and efficient nano-ZnS catalyst for green synthesis of xanthenes and its derivatives under solvent free conditions

2014 ◽  
Vol 1 (4) ◽  
pp. 306 ◽  
Author(s):  
K. V. V. Satyanarayana ◽  
M. Ravi Chandra ◽  
P. Atchuta Ramaiah ◽  
Y. L. N. Murty ◽  
E. N. Pandit ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Solvent Free ◽  
Solvent Free Conditions

A mild and efficient chemoselective N-benzyloxycarbonylation of amines using TBAB as a catalyst under solvent-free conditions

2009 ◽  
Vol 87 (2) ◽  
pp. 393-396 ◽  
Author(s):  
Kothamasu Suresh Babu ◽  
Vidadala Rama Subba Rao ◽  
Ravu Ranga Rao ◽  
Sakhamuri Sivaram Babu ◽  
Janaswami Madhusudana Rao
Keyword(s):  
Efficient Method ◽  
Aromatic Amines ◽  
Solvent Free ◽  
Solvent Free Conditions ◽  
Derivatives Of

We describe a mild and efficient method for the chemoselective N-benzyloxycarbonylation of amines by treatment of amines and aminoesters with benzyloxycarbonyl chloride (Cbz-Cl) in the presence of TBAB under solvent-free conditions in excellent yields. The method is general for the preparation of a wide variety of N-Cbz derivatives of aliphatic, aromatic amines, and aminoesters.

scholarly journals One-pot three-component tandem annulation of 4-hydroxycoumarine with aldehyde and aromatic amines using graphene oxide as an efficient catalyst

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rabindranath Singha ◽  
Aminul Islam ◽  
Pranab Ghosh
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Aromatic Amines ◽  
Significant Loss ◽  
Solvent Free ◽  
One Pot ◽  
Efficient Catalyst ◽  
New Class ◽  
Broad Scope ◽  
Plausible Mechanism

AbstractA convenient and efficient solvent-free, facile, one-pot three-component graphene oxide catalysed approach has been described for the synthesis of chromeno-[4,3-b]quinolin-6-one derivatives from 4-hydroxycoumarin with aldehydes and aromatic amines. Graphene oxide (GO) has proved to be a new class of heterogeneous carbocatalyst which could be easily recovered and reused up to 5th run without significant loss of its catalytic activity. A broad scope of substrate applicability is offered and a plausible mechanism is also suggested for this developed protocol.

scholarly journals Nanorod vanadatesulfuric acid (VSA NRs)-catalyzed green synthesis of hexahydroacridine-1,8-diones in solvent-free conditions

2015 ◽  
Vol 18 (5) ◽  
pp. 547-553 ◽  
Author(s):  
Masoud Nasr-Esfahani ◽  
Morteza Montazerozohori ◽  
Tooba Abdizadeh
Keyword(s):  
Green Synthesis ◽  
Solvent Free ◽  
Solvent Free Conditions
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