Methyl iodide → 1,1-Dimethylethyl N-cyclopropyl-N-[[6-(3-methoxypropyl)-8-quinolinyl]methyl]carbamate

Participants

Reaction Steps

To a solution of 1,1-dimethylethyl cyclopropyl{[6-(3-hydroxypropyl)-8-quinolinyl]methyl}carbamate (1 eq.) from the previous step in THF (0.3 M) was added sodium hydride (60% (w/w) dispersion in paraffin oil, 1.2 eq.). The resulting suspension was stirred at RT for 15 min before iodomethane (1.4 eq.) was added. The now yellow solution was stirred at RT for 12 h before the reaction was quenched with the addition of 1 N aq. NaOH. The aqueous layer was separated and back-extracted with ether. The combined organic extracts were washed further with water and brine, dried over Na2SO4, filtered and the filtrate concentrated in vacuo. Purification of the crude product thus obtained by way of flash chromatography (SiO2, 9:1 (v/v) Hex:EtOAc→EtOAc) afforded the title compound as a colorless oil.

Provenance & Evidence