Enamine Configuration of 5-Methyl-2-phenyl-4-[（Z）-3-tolylamino-phenylmethylene]pyrazol-3（2H）-one

1 INTRODUCTION In contrast to the old-line academic and practical studies of 1-phenyl-3-methyl-4-benzoyl-5-pyrazo- lone (PMBP) on the metal coordination chemistry1], the complexes of β-ketoamines derivated from PMBP received little attention due to its complicated com- plexation. However, in recent years, there has a sudden growth of this area as a result of its timely interest in biological activities2]. Recently, a series of β-ketoamines3] containing PMBP have been prepared fro…

Enamine Configuration of 5-Methyl-2-phenyl-4-[(Z)-3-tolylamino-phenylmethylene]pyrazol-3(2H)-one

Compound 5-methyl-2-phenyl-4-(Z)-3-tolylamino-phenylmethylene]pyrazol-3(2H)-c = 12.035(4)(。A), α = 97.896(6), β = 103.865(6), γ = 107.950(6)°, Mr= 367.44, Z = 2, V= 993.2(6)(。A)3,Dc = 1.229 g/cm3,μ(MoKα) = 0.077 mm 1 and F(000) = 388.The structure was refined to R =0.0444 and wR = 0.1199 for 2903 observed reflections (I ＞ 2σ(I)).The results of 1H NMR and single-crystal X-ray diffraction studies showed the enamine character of the compound.The strong intramolecular hydrogen bonds in the large conjugate system, together with weak intermolecular supramolecular network.