(S)-2-ethylpyrrolidine

(2S)-Ethylpyrrolidine Hydrochloride is used as a reagent in the synthesis of N,N''-substituted-1,3-diamino-2-hydroxypropanes for treating Alzheimer''s disease. Also used as a reagent in the synthesis of cyclobutyl substituted pyrrolopyridine and pyrrolopyrimidine derivatives as JAK kinase inhibitors for treatment of autoimmune disease, cancer, inflammatory disease, and other diseases.