D. Gravestock, J. McKenzie
2002
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Journal
South African journal of chemistry
Abstract
The synthesis and isolation of one diastereomer of 1-benzyl-7,9-dimethyl-8-oxo-1-azaspiro[4.4]nonane-6-carbonitrile 11 was accomplished by the diiron nonacarbonyl-assisted spirocyclization reaction of 2-(1-benzyl-2-pyrrolidinylidene)acetonitrile 10 and 2,4-dibromo-3-pentanone 12.NOESY NMR spectroscopy experiments of 11 showed it to be the (5R*, 6S*, 7S*, 9S*)-diastereomer. South African Journal of Chemistry Vol.55 2002: 132-