Yongkwan Dong, H. Yun, Jang-Min Suh
Dec 15, 1999
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Journal
Acta Crystallographica Section C-crystal Structure Communications
Abstract
The crystal structure of tert-butyl 7,9-dibenzyl-2-oxo-1,7,9-triazaspiro[4.5]dec-3-ene-1-carboxylate, C 26 H 31 N 3 O 3 , is reported. The molecule has imposed mirror symmetry and the hexahydropyrimidine ring adopts a chair conformation with two benzyl substituents bonded equatorially to the ring N atoms. The 3-pyrrolin-2-one is attached as a spiro-skeleton to the hexahydropyrimidine ring by one axial C-C and one equatorial C-N bond.