Gawley, Robert E. published the artcile2-Lithio-N-methylpiperidine and 2-lithio-N-methylpyrrolidine: configurationally and chemically stable unchelated α-aminoorganolithiums, Computed Properties of 1690-74-0, the main research area is lithiomethylpiperidine preparation configurational stability; lithiomethylpyrrolidine preparation configurational stability; piperidine lithiomethyl preparation configurational stability; pyrrolidine lithiomethyl preparation configurational stability.
Enantiomerically pure 2-lithio-N-methylpiperidine and enantiomerically enriched 2-lithio-N-methylpyrrolidine (94% ee) have been made by tin-lithium exchange and evaluated for their chem. and configurational stability. Both show remarkable stability in the presence of TMEDA, resisting racemization at temperatures up to -40°.
Journal of the American Chemical Society published new progress about Configuration. 1690-74-0 belongs to class piperidines, name is Methyl 1-methylpiperidine-2-carboxylate, and the molecular formula is C8H15NO2, Computed Properties of 1690-74-0.
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem