Unexpected formation of highly stabilizedtetrakis-(2-alkoxyphenyl) bismuthonium salts in the oxidation oftris-(2-alkoxyphenyl) bismuthanes with iodosylbenzene

H Suzuki, T Ikegami, N Azuma

Index: Suzuki, Hitomi; Ikegami, Tohru; Azuma, Nagao Journal of the Chemical Society - Perkin Transactions 1, 1997 , # 11 p. 1609 - 1616

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Citation Number: 11

Abstract

Treatment of tris-(2-alkoxyphenyl) bismuthanes 1 with iodosylbenzene in methylene dichloride at 40° C led to none of the expected bismuthane oxides 2 but, quite unexpectedly, gave tetrakis-(2-alkoxyphenyl) bismuthonium chlorides 3 in moderate to good yields. In some cases, bismuthonium formates 4 accompanied the main reaction products. Similar treatment in benzene in the presence of benzyl bromide, ethyl bromide, or 2, 2, 2- ...