A Facile, Mild, and Environmentally Benign Procedure for the Cleavage of Carbon-Nitrogen Double Bonds Using KMnO 4 in the Presence of Montmorillonite K-10 Under Solvent-Free Conditions

2003 ◽  
Vol 134 (4) ◽  
pp. 539-543 ◽  
Author(s):  
Iraj Mohammadpoor-Baltork ◽  
Mohammad mehdi Khodaei ◽  
Abdol R. Hajipour ◽  
Esmaeil Aslani
Keyword(s):  
Solvent Free ◽  
Environmentally Benign ◽  
Double Bonds ◽  
Solvent Free Conditions

Unprecedented one-pot multicomponent synthesis of propargylamines using Amberlyst A-21 supported CuI under solvent-free conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (57) ◽  
pp. 46074-46087 ◽  
Author(s):  
Giovanna Bosica ◽  
John Gabarretta
Keyword(s):  
Coupling Reaction ◽  
Solvent Free ◽  
Environmentally Benign ◽  
Terminal Alkynes ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Solvent Free Conditions

An environmentally benign, one-pot, A3-coupling reaction of various aldehydes, amines and terminal alkynes for the synthesis of propargylamine was catalysed by Amberlyst A-21 supported CuI, under heterogeneous and solvent-free conditions.

EFFICIENT CLEAVAGE OF CARBON–NITROGEN DOUBLE BONDS UNDER SOLVENT FREE CONDITIONS

2002 ◽  
Vol 32 (18) ◽  
pp. 2837-2841 ◽  
Author(s):  
F. Shirini ◽  
M. A. Zolfigol ◽  
A. Pourhabib
Keyword(s):  
Solvent Free ◽  
Double Bonds ◽  
Solvent Free Conditions

2,4,6-Trichloro-1,3,5-Triazine-Promoted Synthesis of 1,8-Dioxo-Octahydroxanthenes under Solvent-Free Conditions

2008 ◽  
Vol 61 (2) ◽  
pp. 77 ◽  
Author(s):  
Zhan-Hui Zhang ◽  
Xu-Ye Tao
Keyword(s):  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Cyanuric Chloride ◽  
Environmentally Benign ◽  
Solvent Free Conditions ◽  
High Yields

A practical protocol has been developed for the synthesis of 1,8-dioxo-octahydroxanthenes from aromatic aldehydes and 5,5-dimethylcyclohexane-1,3-dione under solvent-free conditions in the presence of wet 2,4,6-trichloro-1,3,5-triazine (TCT, cyanuric chloride). The desired products were obtained in high yields with a simple and environmentally benign procedure.

scholarly journals A Facile Solvent Free Synthesis of 3-arylidenechroman-4-ones Using Grinding Technique

2012 ◽  
Vol 9 (3) ◽  
pp. 1251-1256 ◽  
Author(s):  
Suresh Kumar ◽  
Jagdish K. Makrandi
Keyword(s):  
Polyphosphoric Acid ◽  
Cold Water ◽  
Aromatic Aldehydes ◽  
Solvent Free ◽  
Environmentally Benign ◽  
High Yield ◽  
Solvent Free Conditions ◽  
Microwave Irradiations ◽  
Grinding Technique ◽  
Solvent Free Synthesis

An efficient method for the synthesis of 3-arylidenechroman-4-ones has been developed under solvent free conditions using grinding technique. Grinding of variously substituted chroman-4-ones with aromatic aldehydes in presence of anhydrous barium hydroxide at room temperature give 3-arylidenechroman-4-ones in high yield (75-92%). Products are obtained by just acidification of the reaction mixture in ice cold water. Reaction in solid state, with enhanced rate, high selectivity and manipulative simplicity are the attractive features of this environmentally benign protocol. The chroman-4-one derivatives required for the reaction have been obtained by polyphosphoric acid (PPA) catalysed cyclisation of phenoxypropanoic acids under microwave irradiations.

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