155975-19-2

364385-55-7

155975-19-2

Step B: Preparation of tert-butyl (1R,2R)-(2-hydroxycyclohexyl)carbamate To a mixed solution of tert-butyl (1R,2R)-(2-benzyloxycyclohexyl)carbamate (7 g, 23 mmol) in ethyl acetate and methanol (80 mL, 9:1) was added 10% Pd-C catalyst (1.13 g). The hydrogenation reaction was carried out at 35 psi hydrogen pressure for 4 hours. Upon completion of the reaction, it was filtered through a diatomaceous earth pad to remove the catalyst. The filtrate was concentrated to give the target product (Cas:155975-19-2) as an oil (4.7 g, 95% yield). Mass spectrometry (MS) analysis: (M + 1): 215.95.