Diisopropylethylamine → 9-[(R)-6-(2-chloro-4-fluoro-phenyl)-5-methoxycarbonyl-2-thiazol-2-yl-3,6-dihydro-pyrimidin-4-ylmethyl]-3-oxa-7,9-diaza-bicyclo[3.3.1]nonane-7-carboxylic acid tert-butyl ester

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Reaction Steps

To a mixture of 3-oxa-7,9-diaza-bicyclo[3.3.1]nonane-7-carboxylic acid tert-butyl ester (171 mg, 0.75 mmol) and DIPEA (0.45 mL, 2.5 mmol) in CH2Cl2 (10 mL) was added (R)-6-bromomethyl-4-(2-chloro-4-fluoro-phenyl)-2-thiazol-2-yl-1,4-dihydro-pyrimidine-5-carboxylic acid methyl ester (222 mg, 0.5 mmol). The mixture was stirred at room temperature for 16 hours. The mixture was concentrated in vacuo. The residue was purified by flash column chromatography to afford 9-[(R)-6-(2-chloro-4-fluoro-phenyl)-5-methoxycarbonyl-2-thiazol-2-yl-3,6-dihydro-pyrimidin-4-ylmethyl]-3-oxa-7,9-diaza-bicyclo[3.3.1]nonane-7-carboxylic acid tert-butyl ester as yellow oil (0.28 g, 94%). MS: calc'd (MH+) 592, measured (MH+) 592.

Provenance & Evidence