Tert-butyl 6-azido-2-azaspiro[3.3]heptane-2-carboxylate → tert-Butyl 6-amino-2-azaspiro[3.3]heptane-2-carboxylate

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Reaction Steps

The process is performed according to the procedure described in Example 6 (step 6.4.). Starting with 0.638 g (2.68 mmol) of tert-butyl 6-azido-2-azaspiro[3.3]heptane-2-carboxylate, obtained in step 11.5., in 11 mL of ethanol, 0.276 g (1.34 mmol) of Lindlar catalyst (PdCaCO3) is added. After purification on a column of silica gel, eluting with a 98/2/0.2 mixture of dichloromethane, methanol and 28% aqueous ammonia, 0.330 g of pure product is obtained in the form of a white powder.

Provenance & Evidence