The various α-aminophosphonates have been prepared from tertiary aromatic and aliphatic amines with P(O)H compounds via a tert-butyl hydroperoxide mediated cross-dehydrogenativecouplingreaction, eliminating the need for transition-metal catalysts. The oxidation of tertiary amine by tert-butyl hydroperoxide generates an iminium cation intermediate. A further addition of P(O)H compound to iminium cation
Dual C–H functionalization of N-aryl tetrahydroisoquinolines: a highly diastereoselective synthesis of dibenzo[a,f]quinolizines via visible-light induced oxidation and inverse electron-demand aza-Diels–Alder reaction
Dual C–H functionalization of amines with high diastereoselectivity is developedviavisible-light photocatalysis and inverse electron-demand aza-Diels–Alder reaction.
通过可见光光催化和逆电子需求亚胺-迪尔斯-阿尔德反应,发展了胺的双C–H功能化,具有高对映选择性。
Rapid Microwave-Assisted Synthesis of N-Aryl 1,2,3,4-Tetrahydroisoquinolines
作者:José Augusto Forni、Martin Brzozowski、John Tsanaktsidis、G. Paul. Savage、Anastasios Polyzos
DOI:10.1071/ch15490
日期:——
N-aryl 1,2,3,4-tetrahydroisoquinolines were prepared rapidly in good yields by the microwave-assisted Pd-catalysed coupling of (hetero)aryl iodides or bromides with 1,2,3,4-tetrahydroisoquinoline. Reactions were typically complete within 5 min for aryl iodides and within 30 min for pyridyl bromides.
A metal‐ and reagent‐free, electrochemical cross‐dehydrogenative couplingreaction of N‐aryl‐tetrahydroisoquinolines with phosphites and indole was reported, providing an environmentally benign and simple approach for the construction of C–P and C–C.
A diethylphosphite mediated electrochemical oxidation strategy for the synthesis of 3,4-dihydroisoquinolin-1(2H)-ones from tetrahydroisoquinolines under mild conditions has been developed. This protocol provides an environmentally friendly and simple way for the construction of C=O bonds in an undivided cell unit.