Triphenylphosphine → HCID 22036430, compound

Participants

Reaction Steps

DEAD (0.52 mL, 3.3 mmol) was added to a slurry of 2-[3-(4-tert-butoxycarbonyl-1-piperazinyl)-2-pyrazinyloxy]ethanol (1.00 g, 3.08 mmol; prepared in Example 52, Step 2), 4-hydroxy-2,1,3-benzothiadiazole* (0 46 g, 3.0 mmol) and resin bound PPh3 (1.1 g. 3.3 mmol) and shaken until HPLC showed no starting material The mixture was filtered to remove the resin, concentrated and purified by column chromatography on silica to give 0.163 g (12%) of the title compound. Pos-EI-MS shows M+ and 11 ions supporting the stated structure HRMS m/z calcd for C21H26N6O4S (M)+ 458 1736. found 458.1716.

Provenance & Evidence