Acetic Acid → HCID 69266952, compound

Participants

Reaction Steps

To a mixture of 4-amino-5-ethoxycarbonyl-2-(2-hydroxymethyl-1-pyrrolodinyl)thiazole (prepared in the above (2)) 177 mg, 3-chloro-4-methoxybenzaldehyde 111 mg, acetic acid 78 mg and 1,2-dichloroethane 8 ml is added sodium triacetoxyborohydride 415 mg, and the mixture is stirred at room temperature for 6 hours. Further 3-chloro-2 5 4-methoxybenzaldehyde 111 mg and sodium triacetoxyborohydride 415 mg are added thereto, and the mixture is stirred at room temperature for 3 days. The reaction mixture is diluted with an aqueous sodium hydrogen carbonate solution and the organic layer is washed, dried and concentrated in vacuo. The residue is separated with reversed phase column chromatography and preparative thin-layer chromatography, and then triturated with ether to give 4-(3-chloro-4-methoxybenzylamino)-5-ethoxycarbonyl-2-(2-hydroxymethyl-1-pyrrolodinyl)thiazole as crystals, 171 mg. mp 103.5-104.5° C.

Provenance & Evidence