HCID 68291457, compound → HCID 10704451, compound

Participants

Reaction Steps

A stirred solution of (S)-tert-butyl (6-benzyl-6-azaspiro[3.4]octan-8-yl)carbamate (enantiopure Intermediate 13, 0.364 g, 1.149 mmol) in Ethanol (21.3 mL) with Pd/C (10% b/w) (0.291 g, 2.73 mmol), was charged with hydrogen gas @ 50 psi in a pressure bottle and agitated for 4 hrs. +/−MS analysis after 3 hrs 15 min indicated that essentially no starting material remained (m/e 227.2, M+H for desired product). The catalyst was removed by filtration, and the filtrate was concentrated under vacuum to yield 0.247 g of the desired product as a tan oil. +/−MS: m/e 227.2 (M+H). 1H NMR (400 MHz, CHLOROFORM-d) δ 4.66 (br. s., 1H), 3.96 (br. s., 1H), 3.24 (dd, J=11.3, 6.1 Hz, 1H), 3.05 (d, J=11.0 Hz, 1H), 2.89 (d, J=11.2 Hz, 1H), 2.72 (dd, J=11.6, 3.4 Hz, 1H), 2.13 (dd, J=9.6, 3.4 Hz, 3H), 2.04-1.71 (m, 5H), 1.46 (s, 9H).

Provenance & Evidence