Novel products from a Mannich reaction with cyclododecanone: 13,16-dimethyl-13,16-diazatricyclo[9,3,3,11,11]octadecane-18-one and 1-dimethylaminomethyl-13-methyl-13-azabicyclo[9,3,1]pentadec-11-en-15-one
Abstract
Condensation of cyclododecanone with formaldehyde and methylamine gives the bridged bispidone (II) and the dihydropyridin-4-one (IV).