Helvetica Chimica Acta

Eine einfache Allencarbonsäureester??Synthese mittels der Wittig??Reaktion

RW Lang, HJ Hansen

文献索引：Lang, Robert W.; Hansen, Hans-Juergen Helvetica Chimica Acta, 1980 , vol. 63, # 2 p. 438 - 455

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被引用次数: 113

摘要

Summary A simple one-pot synthesis of variously substituted a-allenic esters (7-23, CJ Scheme 4) is described. Either of the phosphonium salts 1 and 2 or the phosphoranes 3-6 in methylene chloride (or acetonitrile) when treated with acid chlorides at room temperature in the presence of triethylamine give the corresponding allenic compounds in fairly good yields (cJ: Tables 3a and 3b). This procedure shows for the first time, that the Wittig-reaction with ...