Carbamoyl Azides of α-N-Protected Amino Acids: A Fast and Simple One-Pot Synthesis
作者:Giancarlo Verardo、Elisa Bombardella、Paola Geatti、Paolo Strazzolini
DOI:10.1055/s-2008-1032029
日期:2008.2
A fast and simple one-pot synthesis of carbamoyl azides of α-N-protected amino acids is reported. The procedure involves the reaction between sodium azide and the mixed anhydride obtained from an α-N-protected amino acid and isobutyl chloroformate, in the presence of KH 2 PO 4 . The reaction rate was influenced by the nature of both the α-N-protection and the amino acid side chain. Surprisingly, T
报道了一种快速简单的一锅法合成 α-N-保护氨基酸的氨基甲酰叠氮化物。该过程涉及叠氮化钠与由α-N-保护的氨基酸和氯甲酸异丁酯获得的混合酸酐在KH 2 PO 4 存在下的反应。反应速率受α-N-保护和氨基酸侧链的性质影响。令人惊讶的是,叔丁氧羰基 (α-N-Boc) 和苄基氧羰基 (α-N-Cbz) 保护的脯氨酸提供了相应的异氰酸酯,而不是预期的氨基甲酰基叠氮化物。