title: (5S*,6R*,7R*)-6-Formyl-5-phenyl-7-propyl-perhydro-pyrazolo[1,2-a]pyrazol-1-one.
abstract: The title compound, C(16)H(20)N(2)O(2), was obtained by catalytic asymmetric cyclo-addition of trans-3-propyl-acrolein with 1-benzyl-idenepyrazolid-3-one betaine. There are two symmetry-independent mol-ecules in the asymmetric unit. In both mol-ecules, the two five-membered heterocyclic rings adopt envelope conformations.
authors.forename: Jinlan
authors.initials: J
authors.lastname: Yu
authors.forename: Qingshan
authors.initials: Q
authors.lastname: Zhang
authors.forename: Yanhong
authors.initials: Y
authors.lastname: Liu
authors.forename: Yunzheng
authors.initials: Y
authors.lastname: Li
authors.forename: Qinpei
authors.initials: Q
authors.lastname: Wu