2,2,6,6-tetramethyl-1-[(2-methylpropan-2-yl)oxy]piperidine

lithium,ethenoxyethane

2,2,6,6-tetramethylheptan-3-one

4,4-dimethylpentane-2,3-dione

2-(4,4-dimethylpentan-2-yl)-4,4,6-trimethyl-5,6-dihydro-1,3-oxazine