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• 30152-60-4 5',6',7',8'-tetrahydro-1'H-spiro[cyclohexane-1,2'-quinazolin]-4'(3'H)-one 

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5',6',7',8'-Tetrahydro-1'H,3'H-spiro[cyclohexane-1,2'-quinazolin]-4'-one in Mannich reaction

The Mannich aminomethylation of 5',6',7,'8'-tetrahydro-1'H,3'H- spiro[cyclohexane-1,2'-quinazolin]-4'-one leads to formation of a heterocyclic system containing an annelated azabicyclic fragment. Hydrolysis of the indicated spirans gives 3-azabicyclo[3.3.1]nonanes.