Benzenesulfonic Acid → 5-(6-(7-methyl-2.3-dihydrobenzofuran-5-carbonyl)pyrimidin-4-ylamino)-1,3-dihydrospiro[inden-2,3'-pyrrolo[2,3-b]pyridin]-2'(1'H)-one

Participants

Reaction Conditions

Reaction Steps

A spatula tip of benzenesulphonic acid was added to 70 mg (0.28 mmol) 5-amino-1,3-dihydrospiro[inden-2,3′-pyrrolo[2,3-b]pyridin]-2′(1′H)-one and 0.10 g (0.26 mmol) (6-chloro-pyrimidin-4-yl)-(7-methyl-2,3-dihydro-benzofuran-5-yl)-methanone in 2 mL 1-pentanol and the mixture was stirred at 85° C. for 1 h. The reaction mixture was evaporated down, taken up in DMF, acidified with a few drops of hydrochloric acid and purified by preparative HPLC. The fractions containing the product were combined and freeze-dried.

Provenance & Evidence