SYNTHESIS AND MOLECULAR STRUCTURE OF METHYL 1—BENZYL—6—PHENYLPIPERIDIN—2—ONE—5—CARBOXYLATE

<正> C20H21NO3,Mr=323.39,monoclinic, space group P21, a= 7. 338(2), b=15. 419(3),c=7. 515(1)A,β=95.98(1)°,V= 845. 7(2)A3,Dm(flotation in aq. KL)=1.267,Dx(Z=2)=1.270gcm-3,λ(MoKα)=0.71069A,μ=0.08cm-1,F(000)=344,T=295°K,final RF=0. 042 for 1651 observed reflections. The title compound was synthesized and established as the trans isomer, with the phenyl and carbomethoxy substituents occupying pseudo-axial and axial positions, respectively, of the piperidin-2-one ring in a half-chair conformation.     

CRYSTAL AND MOLECULAR STRUCTURE OF 1，2，3—TRIBENZOYLINDOLIZINE

<正> Crystal and molecujar structure of the title compound, C29H19NO3, was determined by single crystal X-ray diffraction analysis. .Mt=429. 48, monoclin-ic, space group P21/n, a = 10. 365 (3), b= 14. 614(4), c= 14. 857 (4) A ,β= 103.55(2)°,V=2186. 1(10) A3, Z=4, Dc= 1. 30g/cm3,μ(MoKa) = 0. 81cm-1, F (000) = 919. 87. Final residual R value was 0. 0704 and Rw = 0. 0704. The indo-hzine ring is conjugated only with the 1-benzonyl group.