The Mannich reaction. 1-Alkyl-3,3-diphenyl-4-piperidinones, 1,6'-dialkyl-3',4',5',6',7',8'-hexahydro-5,5,8',8'-tetraphenylspiro[piperidine-3,2'-[2H]pyrano[3,2-c]pyridin]-4-ones and their derivatives
The Mannich reaction. 1-Alkyl-3,3-diphenyl-4-piperidinones, 1,6'-dialkyl-3',4',5',6',7',8'-hexahydro-5,5,8',8'-tetraphenylspiro[piperidine-3,2'-[2H]pyrano[3,2-c]pyridin]-4-ones and their derivatives
The Mannich reaction. 1-Alkyl-3,3-diphenyl-4-piperidinones, 1,6'-dialkyl-3',4',5',6',7',8'-hexahydro-5,5,8',8'-tetraphenylspiro[piperidine-3,2'-[2H]pyrano[3,2-c]pyridin]-4-ones and their derivatives