A facile organocatalyzed Michael addition of pyrazolines to α,β-unsaturated carbonyl compounds
A new highly efficient cascade reaction of pyrazolines with α,β-unsaturated carbonyl compounds catalyzed by DBU was reported. The process underwent the first deprotection/Michael addition reaction to give 4-substituted pyrazoline derivatives, which were further converted into 4,4-di-substituted pyrazolone derivatives through the second deprotection/Michael reaction. The mechanism for this reaction was also studied.
Xie, Chen,Lu, Zhijin,Zhou, Wei,Han, Jianlin,Pan, Yi
supporting information
p. 6650 - 6653
(2013/01/15)
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