1280728-63-3Relevant academic research and scientific papers
Friedel-crafts alkylation of arenes catalyzed by ion-exchange resin nanoparticles: An expedient synthesis of triarylmethanes
Reddy, B. V. Subba,Venkateswarlu,Sridevi,Aldeyab, Salem S.,Vinu, Ajayan
, p. 6826 - 6832 (2015)
Friedel-Crafts alkylation of electron-rich arenes with aldehydes has been achieved in the presence of an active and selective Amberlyst-15 catalyst at the reaction temperature of 60 ° C in solvent-free conditions. The catalyst exhibitsby a very high activity and offers the corresponding triarylmethanes in excellent yields with a high selectivity. The use of highly reactive and selective Amberlyist-15 makes this procedure simple, convenient, cost-effective, practical and environmentally friendly. This method provides an easy access to triarylmethanes in a single step using a readily available acidic ionic resin, which is a stable and easy to separate from the reaction mixture by a simple filtration technique.
H3PW12O40-catalysed alkylation of arenes and diveratrylmethanes: Convenient routes to triarylmethanes and to symmetrical and unsymmetrical 9,10-diaryl-2,3,6,7-tetramethoxyanthracenes
Mohammadpoor-Baltork, Iraj,Moghadam, Majid,Tangestaninejad, Shahram,Mirkhani, Valiollah,Mohammadiannejad-Abbasabadi, Kazem,Khavasi, Hamid R.
experimental part, p. 1357 - 1366 (2011/04/17)
An efficient method for the synthesis of triarylmethanes and difurylarylmethanes through solventless reactions between aldehydes and arenes in the presence of H3PW12O40 as a reusable catalyst under thermal and microwave irradiation conditions has been developed. H3PW12O40-catalysed one-pot consecutive Friedel-Crafts reactions between veratrole and aldehydes were also applied as a convenient protocol for the preparation of symmetrical 9,10-diaryl-2,3,6,7- tetramethoxyanthracenes.
Ultrasound-assisted eco-friendly synthesis of triarylmethanes catalyzed by silica sulfuric acid
Mohammadpoor-Baltork,Moghadam,Tangestaninejad,Mirkhani,Mohammadiannejad-Abbasabadi,Zolfigol
experimental part, p. 840 - 850 (2012/07/03)
An efficient and eco-friendly synthesis of triarylmethanes by the reaction of arenes with aldehydes in the presence of silica sulfuric acid as a heterogeneous and reusable catalyst under ultrasonic irradiation is reported. The advantages of this protocol are the use of green solvents, inexpensive catalyst, commercially available precursors, reusability of SSA, simple work-up, high yields and short reaction times.
Facile and green synthesis of triarylmethanes using silica sulfuric acid as a reusable catalyst under solvent-free conditions
Mohammadpoor-Baltork,Moghadam,Tangestaninejad,Mirkhani,Mohammadiannejad-Abbasabadi,Zolfigol
experimental part, p. 934 - 943 (2012/04/17)
A facile and environmentally-benign protocol has been developed for the synthesis of triarylmethanes (TAMs) from the reaction of different arenes and aldehydes in the presence of silica sulfuric acid (SSA) as a heterogeneous and reusable catalyst under solvent-free conditions. Easy work-up, short reaction times, high yields, high selectivity, mild and green conditions are other salient features of this method.
