Syntheses of calix[4]pyrroles by amberlyst-15 catalyzed cyclocondensations of pyrrole with selected ketones.
A facile and efficient protocol is reported for the synthesis of calix[4]pyrroles and N-confused calix[4]pyrroles in moderate to excellent yields by reaction of dialkyl or cycloalkyl ketones with pyrrole catalyzed by reusable Amberlyst(TM)-15 under eco-friendly conditions.
Bioorganic Research Laboratory, Department of Chemistry, University of Delhi, Delhi-110007, India. smschauhan@chemistry.du.ac.in
Shive Murat Singh
SM
Chauhan
Bhaskar
B
Garg
Tanuja
T
Bisht
D000143:Acids / Q000737:chemistry*; D047250:Calixarenes / Q000138:chemical synthesis* / Q000737:chemistry; D007659:Ketones / Q000737:chemistry*; D015394:Molecular Structure; D011166:Porphyrins / Q000138:chemical synthesis* / Q000737:chemistry; D011758:Pyrroles / Q000737:chemistry*; D013343:Styrenes / Q000737:chemistry*
D000143:Acids; D007659:Ketones; D011166:Porphyrins; D011758:Pyrroles; D013343:Styrenes; C528218:amberlyst-15; C469811:calix(4)pyrrole; D047250:Calixarenes