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Abstract
Abstract The selective 1-substitution reaction of tetrazole was developed by the treatment of 5-substituted 2-(tri-n-butylstannyl)tetrazoles with methyl iodide, methyl p-toluenesulfonate, dimethyl sulfate, or ethyl bromoacetate at room temperature. This selectivity was introduced by blocking the 2-nitrogen with the tri-n-butyltin group against the 2-substitution. In the case of 5-substituted 2-(trimethylstannyl)tetrazoles, a low selectivity was observed. The possible reaction pathways have been discussed.
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