A Facile One-Pot Process for the Formation of Hindered Tertiary Amines
作者:Zhouyu Wang、Dong Pei、Yu Zhang、Chao Wang、Jian Sun
DOI:10.3390/molecules17055151
日期:——
convenient method was developed for the preparation of hinderedtertiaryamines via direct reductive amination of ketones with secondary aryl amines, using trichlorosilane as reducing agent and tetramethylethylenediamine (TMEDA) as organic Lewis base activator. A broad range of ketones were reacted with N-methylaniline to afford the corresponding tertiaryamine products in high yield. An open transition model
Tin-Catalyzed Selective Reductive Hydroamination of Alkynes for the Synthesis of Tertiary Amines
作者:Onkar S. Nayal、Maheshwar S. Thakur、Manoranjan Kumar、Sushila Sharma、Neeraj Kumar
DOI:10.1002/adsc.201501088
日期:2016.3.31
tin(II) for aniline activation is disclosed. In the present work tin(II) triflate‐catalyzed highly selective Markovnikov reductive hydroamination of internal as well as terminal alkynes is reported. The mechanistic study revealed the involvement of two steps in one pot wherein alkyne reduces to corresponding alkene in presence of PMHS as reducing agent followed by hydroamination of alkene. A broad range