Methyl iodide → HCID 69289956, compound

Participants

Reaction Steps

A suspension of 3.2 g (9.5 mmol) of (R)-1-(7-benzyloxy-2-methyl-quinolin-4-yl)-pyrrolidin-3-ol, product of example 86, in THF (275 ml) was treated at RT under nitrogen with 1.42 g (12.4 mmol) of potassium tert-butoxide. The suspension was stirred for 20 minutes at RT then 0.72 ml (11.4 mmol) of methyl iodide were added. After 25 minutes of stirring further 0.284 g (2.48 mmol) of potassium tert-butoxide were added followed by 0.144 ml (2.28 mol) of methyl iodide (10 minutes later) for completion of the reaction. Stirring was continued for 20 minutes, the reaction mixture was then concentrated in vacuo and the residue partitioned between water and AcOEt. The layers were separated the aqueous layer once extracted with AcOEt, the combined organic layers washed with brine, dried over magnesium sulphate and concentrated in vacuo to give 3.33 g (94.5%) (R)-7-benzyloxy-4-(3-methoxy-pyrrolidin-1-yl)-2-methyl-quinoline as an orange viscous oil. ISP mass spectrum, m/e: 349.5 (M+1 calculated for C22H24FN2O2: 349).

Provenance & Evidence