(2R,2′R)-2,2′-Bipyrrolidine

Sigma-Aldrich

742279

(2S,2′S)-2,2′-Bipyrrolidine

Sigma-Aldrich

688746

(S,S)-2,2′-Bipyrrolidine D-tartrate trihydrate

Sigma-Aldrich

715522

(1R,2R)-N,N′-Dimethyl-1,2-diphenylethane-1,2-diamine

Sigma-Aldrich

D157805

N,N′-Dimethylethylenediamine

Sigma-Aldrich

633089

trans-N,N′-Dimethylcyclohexane-1,2-diamine

Sigma-Aldrich

270016

(±)-trans-1,2-Diaminocyclohexane

Sigma-Aldrich

382426

(R)-(+)-1,1′-Binaphthyl-2,2′-diamine

Sigma-Aldrich

346721

(1R,2R)-(−)-1,2-Diaminocyclohexane

Sigma-Aldrich

671274

(R,R)-(−)-N,N′-Dimethyl-1,2-cyclohexanediamine