Synthesis of tertiary arylamines: Lewis acid-catalyzed direct reductive N-alkylation of secondary amines with ketones through an alternative pathway
作者:Onkar S. Nayal、Maheshwar S. Thakur、Vinod Bhatt、Manoranjan Kumar、Neeraj Kumar、Bikram Singh、Upendra Sharma
DOI:10.1039/c6cc04381j
日期:——
We report herein a highly efficient, tin(II)/PMHS catalyzed reductive N-alkylation of arylamines with ketones affording tertiary arylamines. Very wide substrate scope was observed for current catalytic method as all six...
Ligand-free Iron(II)-Catalyzed N-Alkylation of Hindered Secondary Arylamines with Non-activated Secondary and Primary Alcohols <i>via</i>
a Carbocationic Pathway
作者:Onkar S. Nayal、Maheshwar S. Thakur、Manoranjan Kumar、Neeraj Kumar、Sushil K. Maurya
DOI:10.1002/adsc.201701183
日期:2018.2.15
Secondary benzylic alcohols represent a challenging class of substrates for N‐alkylation of amines. Herein, we describe an iron(II)‐catalyzed eco‐friendly protocol for N‐alkylation of secondary arylamines with secondary benzyl alcohols through a carbocationic pathway instead of the known borrowinghydrogen transfer (BHT) approach. Transiently generated carbocations, produced from alcohols via self‐condensation
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