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Functional Group Migration in Reactions of 1,2‐Diferrocenyl‐3‐(methylthio)cyclopropenylium Iodide with CH Acids
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Abstract1,2‐Diferrocenyl‐3‐(methylthio)cyclopropenylium iodide reacts with malonic acid derivatives (diethyl malonate and malononitrile as the active methylene compounds) to give mainly the corresponding 3,4‐diferrocenyl‐2‐(methylthio)hexa‐2,4‐dienedioic acid and 2,3‐diferrocenyl‐4‐(methylthio)buta‐1,3‐diene‐1,1‐dicarboxylic acid derivatives as well as ethyl 2,3‐diferrocenyl‐4‐(methylthio)‐5‐oxocyclo‐1,3‐pentadiene‐1‐carboxylate or 2‐cyano‐3,4‐diferrocenyl‐5‐(methylthio)‐2,4‐cyclopentadien‐1‐imine. X‐ray diffraction data for diethyl (2Z,4E)‐3,4‐diferrocenyl‐2‐(methylthio)hexa‐2,4‐dienedioate and 2,3‐diferrocenyl‐4‐(methylthio)buta‐1,3‐diene‐1,1‐dicarbonitrile are presented. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
Title: Functional Group Migration in Reactions of 1,2‐Diferrocenyl‐3‐(methylthio)cyclopropenylium Iodide with CH Acids
Description:
Abstract1,2‐Diferrocenyl‐3‐(methylthio)cyclopropenylium iodide reacts with malonic acid derivatives (diethyl malonate and malononitrile as the active methylene compounds) to give mainly the corresponding 3,4‐diferrocenyl‐2‐(methylthio)hexa‐2,4‐dienedioic acid and 2,3‐diferrocenyl‐4‐(methylthio)buta‐1,3‐diene‐1,1‐dicarboxylic acid derivatives as well as ethyl 2,3‐diferrocenyl‐4‐(methylthio)‐5‐oxocyclo‐1,3‐pentadiene‐1‐carboxylate or 2‐cyano‐3,4‐diferrocenyl‐5‐(methylthio)‐2,4‐cyclopentadien‐1‐imine.
X‐ray diffraction data for diethyl (2Z,4E)‐3,4‐diferrocenyl‐2‐(methylthio)hexa‐2,4‐dienedioate and 2,3‐diferrocenyl‐4‐(methylthio)buta‐1,3‐diene‐1,1‐dicarbonitrile are presented.
(© Wiley‐VCH Verlag GmbH & Co.
KGaA, 69451 Weinheim, Germany, 2006).
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