Diisopropylethylamine → HCID 86762366, compound

Participants

Reaction Steps

Methyl 6-(3-(6-aminohexyloxy)phenyl)picolinate dihydrochloride (19) (40 mg, 0.10 mmol) and DIEA (34 μL, 26 mg, 0.20 mmol) were dissolved in CHCl3 (0.7 mL). Triphosgene (14 mg, 0.047 mmol) was dissolved in CHCl3 (0.3 mL). The solutions were combined and a second portion of DIEA (34 μL, 26 mg, 0.20 mmol) was immediately added. The mixture was left to stand 30 min at RT and evaporated. The residue was dissolved in ethyl acetate and the precipitated DIEA hydrochloride was filtered off. The solvent was evaporated and the crude isocyanate (20) was used directly for the next step.

Provenance & Evidence