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Crystal Structure of N-Methylcamphorimide and Its Monothiocarbonyl and Monoselenocarbonyl Derivatives

Gdaniec M., Milewska M., Połoński T.

Polish Journal of Chemistry

2000

Vol. 74, nr 7

1011-1016

Crystal structure of N-methylcamphorimide and its monothio and monoseleno analogues show pronounced non-planarity of the chromophore moieties. The observed degree of the chromophore deformation decreases on going from the N-methylocamphorimide through its thiocarbonyl to the selenocarbonyl analogue.

Reaction of phenyllithium with N-pivaloyl-20-piperidone

Maurin J.K., Czarnocki Z., Burdach A.

Polish Journal of Chemistry

1998

Vol. 72, nr 5

940-948

Structural features of the reaction of N-pivaloyl-2-piperidone with phenyllithium were elaborated. Two compounds (4) and (5) were obtained and their structures were established by X-ray analysis. C16H23NO2(4): monoclinic, C2/c, a=37,197(7), b=8.479(2), c=9.988(2) A, beta=96.5(3)degree, Z=8; C22H27NO (5): orthorhombic, P2-12-12-1, a=8.244(2), b=10.305(2), c=22.616(5) A, Z=4.