Efficient and scaleable methods for ω-functionalized nonanoic acids: Development of a novel process for azelaic and 9-aminononanoic acids (nylon-6, 9 and nylon-9 …

…, P Maggioni, R Bianchini, S Sguassero…

Index: Cotarca, Livius; Delogu, Pietro; Nardelli, Alfonso; Maggioni, Paolo; Bianchini, Roberto; Sguassero, Stefano; Alini, Stefano; Dario, Roberto; Clauti, Giuliano; Pitta, Giorgio; Duse, Gianpaolo; Goffredi, Fabrizio Organic Process Research and Development, 2001 , vol. 5, # 1 p. 69 - 76

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Citation Number: 7

Abstract

A new, convergent synthesis and process of the title open-chain C-9 compounds, valuable monomers for preparation of polyamides with specific properties, are discussed. Starting from relatively inexpensive raw materials, for example, cyclohexanone and activated C-3 olefins, the method provides polymer grade ω-functionalized nonanoic acids. An improved protocol for cyanoethylation or carbalkoxyethylation of cyclohexanone in the presence of a ...

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