US 11,897,843 B2
Process for the preparation of enantiomerically enriched 3-aminopiperidine
Karl Reuter, Gundelfingen (DE); Tobias Wedel, Karlsruhe (DE); Viktor Meier, Gundelfingen (DE); Mark Kantor, Freiburg (DE); Vasyl Andrushko, Karlsruhe (DE); and Florian Stolz, Denzlingen (DE)
Assigned to Reuter Chemische Apparatebau KG
Filed by REUTER CHEMISCHE APPARATEBAU KG, Freiburg (DE)
Filed on Sep. 9, 2022, as Appl. No. 17/941,959.
Application 17/941,959 is a division of application No. 16/579,584, filed on Sep. 23, 2019, granted, now 11,472,770.
Application 16/579,584 is a division of application No. 14/768,751, granted, now 10,464,898, issued on Nov. 5, 2019, previously published as PCT/EP2014/053176, filed on Feb. 19, 2014.
Claims priority of application No. 13156030 (EP), filed on Feb. 20, 2013.
Prior Publication US 2023/0008387 A1, Jan. 12, 2023
Int. Cl. C07D 211/56 (2006.01); C07D 211/60 (2006.01)
CPC C07D 211/56 (2013.01) [C07D 211/60 (2013.01)] 4 Claims
 
1. Crystalline (R)-3-aminopiperidine-dihydrochloride-monohydrate.