X=Y-ZH compounds as potential 1,3-Dipoles. Part 231,2 mechanisms of the reactions of ninhydrin and phenalene trion with ∝-amino acids. X-ray crystal structure of protonated ruhemann's purple, a stable azomethine ylide
作者:Ronald Grigg、John F. Malone、Theeravat Mongkolaussavaratana、Sunit Thianpatanagul
DOI:10.1016/s0040-4020(01)89244-9
日期:1989.1
3-trione reacts with ∝-amino acids via a different mechanism despite the formal similarity of the two reagents. In this case decarboxylation occurs in a carbinolamine and azomethine ylides are not involved. An X-raycrystalstructure of protonatedRuhemann'sPurple shows it to be a stable N-H azomethine ylide, confirming the results of cycloaddition studies.
Decarboxylative transamination. Mechanism and applications to the synthesis of heterocyclic compounds
作者:Ronald Grigg、Sunit Thianpatanagul
DOI:10.1039/c39840000180
日期:——
The currently accepted mechanism for decarboxylativetransamination is shown to be incorrect; the intervention of 1,3-dipolar species in the decarboxylativetransamination of α-amino acids is demonstrated by trapping with a range of dipolarophiles.