Iodine → 3-Iodo-2-methyl-4H-pyrimido[2,1-b][1,3]benzothiazol-4-one

Participants

Reaction Steps

A stirred solution of the Step 1 intermediate (9 g, 41.613 mmol) in acetonitrile (150 ml) was reacted with ceric ammonium nitrate (11 g, 20.803 mmol) followed by iodine (6 g, 24.961 mmol) according to the procedure outlined in Intermediate 1, Step 3 to give 9 g of the product as a pale yellow solid; 1H NMR (300 MHz, DMSO-d6) 1H NMR (300 MHz, DMSO-d6) δ 3.15 (s, 3H), 7.54-7.60 (m, 2H), 8.00-8.07 (m, 1H), 8.84-8.90 (m, 1H).

Provenance & Evidence