Tetrahydrofuran → 3-Ethynyl-1-azabicyclo[2.2.2]octan-3-ol

Participants

Reaction Steps

Quinuclidinone (76 g, 0.608 mol) was added to a stirred suspension of lithium acetylide ethylene diamine complex (85.7 g, 0.791 mol) in dry THF (500 ml) under nitrogen, at 0° C. After 16 hours at room temperature, a saturated aqueous solution of K2CO3 was added and the mixture was extracted with THF (3 times). Organic phases were combined, dried over MgSO4 and evaporated under vacuum. The white solid was triturated in ether, filtered and dried to give 3-ethynylquinuclidin-3-ol 47 (56.22 g, 61

Provenance & Evidence