1,2-Dichloroethane → HCID 68538958, compound

Participants

Reaction Steps

Add to a solution of 2-bromo-6H-pyrrolo[3,2-d]thiazole-5-carboxylic acid (2.53 gm, 10 mmol) in DMF (45 ml), DIEA (diisopropylethylamine, 10 ml, 6 eq), EDC (1-( 3-dimethylaminopropyl)-3-ethylcarbodiimide HCl, 5.0 gm, 3.5 eq); HOBT ( 1-hydroxybenzotriazole, 1.91 gm, 14 mmol, 1.4 eq) and NH4Cl (2.25 gm, 42.mmol). Stir the mixture at room temp for 6 hr and monitor by LC-MS. When complete, dilute the mixture with ethyl acetate, and wash with water and brine. Collect the solid by filtration (2.21 gm) and purify by chromatography on silica gel (ISCO silica cartridge, 4 gm, elute with methanol (10-40%) in methylene chloride) to afford the title compound (550 mg).

Provenance & Evidence