Bis(2,4,6-trichlorophenyl) propanedioate → 7-Hydroxy-8-nitro-2H-thiazolo[3,2-A]pyridin-5(3H)-one

Participants

Reaction Steps

Using the same reaction conditions and workup as described for the preparation of Intermediate (I-19b), 2-nitromethylene-thiazolidine (0.65 g, 4.45 mmol) was reacted with malonic acid bis-(2,4,6-trichloro-phenyl) ester (1.5 g, 4.45 mmol) in Xylene (10 mL) to afford the crude product. Purification by column chromatography on silica gel (100% ethylacetate) afforded 0.3 g of the product (33% yield).

Provenance & Evidence