Ethanol → 5-{4-[2-Fluoro-4-(3-phenylacetyl-thioureido)-phenoxy]-6-methoxy-quinazolin-7-yloxymethyl}-hexahydro-cyclopenta[c]pyrrole-2-carboxylic acid benzyl ester

Participants

Reaction Steps

5-{4-[2-Fluoro-4-(3-phenylacetyl-thioureido-phenoxy]-6-methoxy-quinazolin-7-yloxymethyl}-hexahydro-cyclopenta[c]pyrrole-2-carboxylic acid benzyl ester. Phenylacetyl chloride (2.65 ml, 20.00 mmol) and AgSCN (4.92 g, 29.6 mmol) were combined in dry toluene (50 ml) and heated to reflux for 2 hrs. The reaction mixture was allowed to cool to room temperature, the solids were filtered through celite and the filtrate concentrated in vacuo. The resulting oil was combined with 5-[4-(4-amino-2-fluoro-phenoxy)-6-methoxy-quinazolin-7-yloxymethyl]-hexahydro-cyclopenta[c]pyrrole-2-carboxylic acid benzyl ester (5.6 g, 10 mmol) in 1:1 EtOH:toluene (100 ml) and the mixture stirred at room temperature for 1-2 hrs. The reaction mixture was diluted with EtOAc and washed with sat'd NaHCO3 (3×), H2O (1×), sat'd NaCl (1×), dried (Na2SO4), and concentrated in vacuo. The resulting oil was purified by flash chromatography (3:1 EtOAc:hexanes) to give 5-{4-[2-fluoro-4-(3-phenylacetyl-thioureido)-phenoxy]-6-methoxy-quinazolin-7-yloxymethyl}-hexahydrocyclopenta[c]pyrrole-2-carboxylic acid benzyl ester (3.61 g, 49%) as a dark brown foam. 1H-NMR (400 MHz, DMSO): 12.44 (s, 1H), 11.80 (s, 1H), 8.54 (s, 1H), 7.90 (m, 1H), 7.53 (s, 1H), 7.48 (m, 2H), 7.38 (s, 1H), 7.34 (m, 7H), 7.28 (m, 3H), 5.05 (s, 2H), 4.16 (d, 2H), 3.94 (s, 3H), 3.72 (s, 2H), 3.48 (m, 2H), 3.30 (m, 2H), 2.65 (m, 2H), 2.52 (m, 1H), 2.10 (m, 2H), 1.30 (m, 2H). LC/MS Calcd for [M+H]+ 736.2, found 736.0.

Provenance & Evidence