(2S)-2-amino-1-methylcyclopentanol hydrochloride 、
2-chloro-3-ethyl-4-fluorobenzonitrile 在
crude material 作用下,
以to obtain Diastereomer 1 (cis) (82 mg) and Diastereomer 2 (trans) (29 mg)的产率得到2-Chloro-3-ethyl-4-[[(1S)-2-hydroxy-2-methyl-cyclopentyl]amino]benzonitrile