H. Jun
2011
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Journal
Chinese Journal of Spectroscopy Laboratory
Abstract
Ethyl 3-iodobenzoate(1) was prepared by reaction of 3-iodobenzoic acid with anhydrous ethanol in sulfuric acid.Then this compound reacted with 80% hydrazine hydrate to get 3-iodobenzoylhydrazine(2).And then the reaction of compound(2) with 4-methylbenzaldehyde,2-chlorobenzaldehyde,4-chlorobenzaldehyde,4-hydroxybenzaldehyde,2,4-dichlorobenzaldehyde,4-methoxybenzaldehyde 3-nitrobenzaldehyde,4-nitrobenzaldehyde and dimethylaminobenzaldehyde respectively produced corresponding hydrazones(3a—3i).Then 3a—3i respectively cyclodehydrated with propanoic anhydride to afford 3-N-propanoyl-2-aryl-5-(3-iodophenyl)-1,3,4-oxadiazolines(4a—4i),structures of 4a—4i were confirmed by IR spectroscopy.