Triethylamine → (1R,2s)-1-(tert-butoxycarbonylamino)-2,3-dihydro-1H-inden-2-yl methanesulfonate

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Reaction Steps

Cis-1-[(1,1-Dimethylethoxy)carbonylamino]-2-hydroxyindan (Method 5; 14.0 g, 56.2 mmol) was dissolved in DCM (200 ml) and triethylamine (11.8 ml, 84.3 mmol). Methanesulfonyl chloride (7.1 g, 61.9 mmol) dissolved in DCM (20 ml) was added and the mixture stirred at room temperature for 3 hours. The mixture was evaporated and EtOAc (250 ml) added. After washing with water and drying over magnesium sulphate the organic solution was evaporated to yield Cis-1-[(1,1-dimethylethoxy)carbonylamino]-2-methanesulphonyloxyindan (9.7 g, 98%) as a white solid.

Provenance & Evidence