Synthetic application of in situ generation of N-acyliminium ions from α-amido p-tolylsulfones for the synthesis of α-amino nitriles
作者:Santosh T. Kadam、Ponnaboina Thirupathi、Sung Soo Kim
DOI:10.1016/j.tet.2010.01.010
日期:2010.2
N-acyliminium ions, which undergo the nucleophilic addition of trimethylsilyl cyanide (TMSCN) to provide the N-protected α-aminonitriles in very good yield. A variety of α-amido p-tolylsulfones were prepared from aromatic as well as aliphatic aldehydes for the synthesis of α-aminonitriles.
Mannich-type Reactions of in Situ Generated N-Acyliminium Ions from α-Amido p-Tolylsulfones with Silyl Enolates
作者:Sang-Hyeup Lee、Santosh T. Kadam
DOI:10.5012/bkcs.2011.32.10.3738
日期:2011.10.20
aliphatic aldehydes reactedwith silyl enol ether and silyl enol ester under mild reaction conditions to afford N-Cbz-protected β-aminoketones and N-Cbz-protected β-amino esters in moderate to good yield, respectively.Key Words : α-Amido p-tolylsulfone, Cbz-Protected β-amino ketone, N-Acyliminium ion, Mannich-type re-action IntroductionA Mannich and Mannich-typereactions are powerfulmethods for the synthesis