Acyl iodides in organic synthesis: VIII. Reactions with amino acids
摘要:
Reactions of acyl iodides RCOI (R=Me, Ph) with glycine, beta-alanine, and gamma-aminobutyric acid were investigated. The reaction proceeded easily at room temperature without solvent involving both functional groups H2N and COOH. The prevalence of one of the reaction directions depends on the acidity of the amino acid. The more acidic glycine (pK(a) 2.4) reacts with RCOI affording mainly N-acylated product, whereas beta-alanine (pK(a) 3.60) and especially gamma-aminobutyric acid (pK(a) 4.06) are predominantly involved into exchange iodination furnishing the corresponding aminoacyl iodides.
Acyl iodides in organic synthesis: VIII. Reactions with amino acids
作者:M. G. Voronkov、L. I. Belousova、A. A. Trukhina、N. L. Vlasova
DOI:10.1134/s1070428002120023
日期:2006.2
Reactions of acyl iodides RCOI (R=Me, Ph) with glycine, beta-alanine, and gamma-aminobutyric acid were investigated. The reaction proceeded easily at room temperature without solvent involving both functional groups H2N and COOH. The prevalence of one of the reaction directions depends on the acidity of the amino acid. The more acidic glycine (pK(a) 2.4) reacts with RCOI affording mainly N-acylated product, whereas beta-alanine (pK(a) 3.60) and especially gamma-aminobutyric acid (pK(a) 4.06) are predominantly involved into exchange iodination furnishing the corresponding aminoacyl iodides.