Schuscherina et al., Vestnik Moskovskogo Universiteta, 1957, vol. 12, # 6, p. 173,182
作者:Schuscherina et al.
DOI:——
日期:——
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 Precursors)
propanecarboxylic acid derivatives 1 in high yield. Cyclohexaneperoxycarboxylic acid (CHPCA) is introduced as highly efficient reagent in Baeyer−Villiger rearrangement of 1. Pyrolysis of 2 (EWG = CN) afforded under optimized conditions 3 in high yield and regioisomeric purity, otherwise a mixture of three unsaturated isomeric ω-cyano nonenoic acids is obtained. Partial hydrogenation of unsaturated acids 3 allowed