abstract |
The invention relates to a process for the preparation of 1,2,3,6-tetrahydro-2,2,6,6-tetramethylpyridinenfrom 4-hydroxy-2,2,6,6-tetramethylpiperidine,nin which 4-hydroxy-2,2,6,6-tetramethylpiperidinenelevated temperature in the gas phase on a solid acid catalystndehydrated. |