Sodium Carbonate → HCID 145857603, compound

Participants

Reaction Steps

The procedure in Example 294: step e was followed using (4-bromo-3-methyl-phenyl)-methyl-amine ((Example 262: step a) 600 mg, 3 mmol), palladium acetate (34 mg, 0.15 mmol), and 2-(dicyclohexylphosphino)biphenyl (210 mg, 0.6 mmol) in dioxane (20 mL). Analogous workup yielded the crude pinacolboronate ester (720 mg, 98%) which was used without further purification. Following the procedure in Example 294: step f the crude boronate (540 mg, 2.18 mmol) was reacted with {[4-(3-bromo-benzenesulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester ((Example 27: step c) 715 mg, 1.46 mmol), aq Na2CO3 (2M, 4.4 mL, 8.8 mL), and Pd(PPh3)4 (407 mg, 0.37 mmol) in ethanol (4.4 mL) and toluene (8.8 mL). Analogous workup and SiO2 flash column chromatography yielded the title compound (482 mg, 62%) as a yellow glass. 1H-NMR (CDCl3): δ 8.0 (s, 1H), 7.95 (m, 1H), 7.90 (m, 1H), 7.55 (m, 1H), 7.51 (m, 1H), 7.05 (m, 1H), 6.53 (m, 2H), 2.9 (s, 3H), 2.56 (s, 3H), 2.56 (s, 3H), 2.22 (s, 3H), 1.52 (s, 9H).

Provenance & Evidence