Synthesis of Substituted Quinolines by Electrophilic Cyclization of <i>N</i>-(2-Alkynyl)anilines
作者:Xiaoxia Zhang、Marino A. Campo、Tuanli Yao、Richard C. Larock
DOI:10.1021/ol0476218
日期:2005.3.1
Quinolines substituted in the 3-position by an iodo or phenylseleno group are readily prepared in good to excellent yields by the reaction of propargylic anilines with appropriate electrophiles under mild reaction conditions. [reaction: see text]
A highly efficient three-component coupling of aldehyde, terminal alkyne, and amine via C–H activation catalyzed by reusable immobilized copper in organic–inorganic hybrid materials under solvent-free reaction conditions
作者:Pinhua Li、Lei Wang
DOI:10.1016/j.tet.2007.04.032
日期:2007.6
Recycling copper(I) immobilized on organic–inorganic hybrid material behaves as a very efficient heterogeneous catalyst in the three-component Mannich coupling reaction of aldehydes, terminalalkynes, and amines via C–H activation to afford the corresponding products in good to excellent yields under solvent-free reaction conditions.
Synthesis of 3-sulfonylquinolines by visible-light promoted metal-free cascade cycloaddition involving <i>N</i>-propargylanilines and sodium sulfinates
A visible-light promoted radical cascade reaction of N-propargylanilines with sodium sulfinates as sulfonyl radical precursors was developed under metal-free conditions.
Visible-light-induced multicomponent cascade cycloaddition involving <i>N</i>-propargyl aromatic amines, diaryliodonium salts and sulfur dioxide: rapid access to 3-arylsulfonylquinolines
作者:Deli Sun、Kun Yin、Ronghua Zhang
DOI:10.1039/c7cc09410h
日期:——
A visible-light-induced, Eosin Y catalyzed three-component synthesis of 3-arylsulfonylquinoline derivatives through N-propargyl aromatic amines, diaryliodonium salts and sulfurdioxide has been discovered. This transformation represents an efficient and attractive method for the straightforward synthesis of 3-arylsulfonylquinoline derivatives via the formation of C–S bonds and quinolines in one step
Electrooxidative tandem cyclization of <i>N</i>-propargylanilines with sulfinic acids for rapid access to 3-arylsulfonylquinoline derivatives
作者:Jie Liu、Min Wang、Laiqiang Li、Lei Wang
DOI:10.1039/d1gc00171j
日期:——
A series of N-propargylanilines (0.2 mmol) and sulfinic acids (0.5 mmol) afforded 3-arylsulfonylquinoline derivatives in high yields (70–93%) and low current efficiencies upon electrooxidation. Electrolyses were carried out in a one-compartment cell, under constant current and ambient conditions, in methanol-nBu4NBF4 containing pyridine (0.4 mmol), without any added chemical oxidant. A scale-up electrolysis
一系列N-炔丙基苯胺(0.2 mmol)和亚磺酸(0.5 mmol)以高收率(70-93%)和低电氧化效率提供了3-芳基磺酰基喹啉衍生物。在恒定电流和环境条件下,在单隔室的电解池中,在不添加任何化学氧化剂的,含有吡啶(0.4 mmol)的甲醇-n Bu 4 NBF 4中进行电解。在5mmol的N-炔丙基苯胺1a上进行放大电解,得到3-芳基磺酰基喹啉3aa,产率为65%,电流效率为56%。提出了机械学假说。