Citric Acid → HCID 18630236, compound

Participants

Reaction Conditions

Reaction Steps

1.3M s-BuLi in cyclohexane (31.4 mL, 41 mmol) was added dropwise to THF (100 mL) and TMEDA (5.35 g, 46 mmol), cooled to -100° C. under nitrogen with stirring. To this mixture was added dropwise the compound of Example 5 (10.45 g, 37 mmol), dissolved in a minimum amount of THF. After stirring for 10 min, MeI (15.8 g, 0.1114 mol) was injected. The mixture was stirred for 1 h and 25% citric acid (15 mL) was added. The mixture was extracted three times with ether; the ether extracts were combined and washed twice with water, dried (MgSO4), and concentrated. The crude product was purified by RC, with 1:9 ethyl acetate/hexanes. The title compound was recovered as a light yellow solid, in 99% yield. m.p. 44-47° C.

Provenance & Evidence