%0 Journal Article
%T Insitugenerationoftritylcarbocation(Ph3C+)asahomogeneousorganocatalystfortheefficientsynthesisof4,4¡¯-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)s
%A Abdolkarim Zare
%A Maria Merajoddin
%A Ahmad Reza Moosavi-Zare
%A Mahmoud Zarei
%J ´ß»¯Ñ§±¨
%P 85-89
%D 2014
%R 10.1016/S1872-2067(12)60728-1
%X £¿Tritylchloride(Ph3CCl)efficientlycatalyzesthecondensationof3-methyl-1-phenyl-1H-pyrazol-5(4H)-oneandaromaticaldehydesundermildandsolvent-freeconditions,affording4,4'-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)sinhightoexcellentyieldsandinshortreactiontime.Thepresenceoftherequisiteorganocatalytictritylcarbocation(Ph3C+)specieswasconfirmedbyanalysisofinfrared,1HNMR,andultravioletspectraldata.Aplausiblemechanismwasproposedforthereactionbasedontheobservationsandliteratureprecedent.
%K Tritylchloride(Ph3CCl)
%K Tritylcarbocation(Ph3C+)
%K 4
%K 4'-(Arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)
%K 3-Methyl-1-phenyl-1H-pyrazol-5(4H)-one
%K Solvent-freesynthesis
%U http://www.chxb.cn/CN/abstract/abstract21208.shtml