Diisopropylethylamine → HCID 25065917, compound

Participants

Reaction Steps

To a solution of (R)-aminocarnitine (16 mg, 0.10 mmol) and diisopropylethylamine (52 uL, 0.30 mmol) in MeOH (2 mL) was added 1-(heptyloxy)-4-isocyanatobenzene (46 uL, 0.20 mmol) and the reaction stirred for 18 h. The MeOH was removed in vacuo and the residue stirred with 1:1 ether/EtOAc. Impurities dissolved into the ether/EtOAc which were discarded and the remaining material taken up into 90:10 CH2Cl2/MeOH and then loaded onto a short SiOH plug. The title compound was eluted by increasing MeOH content in 10% steps to 60%. The compound was then taken up into 90:10 CH2Cl2/MeOH and filtered through a plug of celite which gave after drying the title compound as a white powder (9 mg, 23%). 1H NMR (400 MHz, CD3OD) δ 7.24 (d, 2H, J=9.2 Hz), 6.84 (d, 2H, J=8.8 Hz), 4.71-4.69 (m, 1H), 3.93 (t, 2H, J=6.4 Hz), 3.77-3.53 (m, 2H), 3.25 (s, 9H), 2.74-2.70 (m, 2H), 1.77-1.72 (m, 2H), 1.49-1.34 (m, 8H), 0.92 (t, 3H, J=6.8 Hz); MS ESI 394.3 [M+H]+, calcd for [C21H35N3O4+H]+ 394.52.

Provenance & Evidence