Dicyclohexylcarbodiimide → HCID 67605739, compound

Participants

Reaction Steps

A mixture of 2-(tert-butoxycarbonylamino)-2-(thiophen-2-yl)acetic acid (710 mg, 2.76 mmol), (R)-quinuclidin-3-ol (421 mg, 3.31 mmol), DCC (683 mg, 3.31 mmol), HOBT (507 mg, 3.31 mmol) in THF (20 ml) was stirred at RT overnight. THF was evaporated, and the crude was portioned between EtOAc and 1M K2CO3. The organic phase was dried over Na2SO4, filtered and evaporated to dryness. The crude was purified by flash chromatography (DCM/MeOH=98/2) to obtain (R)-quinuclidin-3-yl 2-(tert-butoxycarbonylamino)-2-(thiophen-2-yl)acetate (509 mg, 50.3% yield).

Provenance & Evidence