3-iodovaleric acid

A-Alkylation or acylation of 3(2//)-pyridazinones by standard procedures afforded derivatives with unambiguous structure, whereas pyri-dazines can yield either Ar or (V2-substituted products. Pyridazine-4-carboxamide, when alkylated with 5-iodovaleric acid or related acids, yielded a mixture of both Nr and A -regioisomers in the ratio of 1 1.25 or 1 1. They were not separated (95AP307 96PHA76). Alkylation of 3-(2-pyrrolyl)pyridazine afforded the A -alkylated product, as evidenced from X-ray analysis [96AX(C)1002]. 

Ethyl 5-iodovalerate Pentanoic acid, 5-iodo-, ethyl ester (9) (41302-32-3)... 

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