Acetic Anhydride → HCID 70206776, compound

Participants

Reaction Steps

The process is performed as in Example 92 but starting with 0.45 g of 5-thiazolecarboxaldehyde, 0.45 g of 5H,10H-imidazo[1,2-a]indeno[1,2-e]pyrazin-4-one, 0.2 g of ammonium acetate and 4 ml of acetic anhydride. 0.35 g of 10-(5-thiazolylmethylene)-5H,10H-imidazo[1,2-a]indeno[1,2-e]pyrazin-4-one is obtained in the form of a dark red solid melting above 260° C. (Analysis, % calculated C: 64.14, H: 3.17, N: 17.60, O: 5.03, S: 10.07, % found C: 64.2, N: 17.2, S: 9.7).

Provenance & Evidence