[EN] PROCESS FOR FORMING A CARBON-CARBON BOND<br/>[FR] PROCÉDÉ DE FORMATION D'UNE LIAISON CARBONE-CARBONE
申请人:UNIV MANCHESTER
公开号:WO2019215426A1
公开(公告)日:2019-11-14
A process for forming a carbon-carbon bond to couple an aryl or heteroaryl group of a first compound with an aryl or heteroaryl group of a second compound, the process comprising reacting the first compound with the second compound in the presence of a catalytically effective amount of a neutral or cationic ruthenium(II) catalyst of formula (I):
A method of producing an aromatic compound of the following formula (3) comprising reacting a compound of the following formula (1) with an olefin compound of the following formula (2) in the presence of a transition metal complex:
(wherein, an Ar
1
ring represents an aromatic hydrocarbon ring or aromatic heterocyclic ring, an Ar
2
ring represents a heterocyclic ring containing X
1
and N*, and the X
1
represents a nitrogen atom or carbon atom and the N represents a nitrogen atom connecting via a double bond to either one of two adjacent atoms in the Ar
2
ring.)
(wherein, R
1
, R
2
, R
3
and R
4
represent each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 18 carbon atoms.)
(wherein, Ar
1
, Ar
2
, X
1
, N*, R
1
, R
2
and R
3
represent the same meanings as described above.).
Microwave-Assisted Syntheses of <i>N</i>-Heterocycles Using Alkenone-, Alkynone- and Aryl-carbonyl <i>O</i>-Phenyl Oximes: Formal Synthesis of Neocryptolepine
作者:Fernando Portela-Cubillo、Jackie S. Scott、John C. Walton
DOI:10.1021/jo800847h
日期:2008.7.1
approach enabled the natural product trisphaeridine to be made. Starting from 2-phenylnicotinaldehyde derivatives, ring closures of the derived iminyl radicals onto the phenyl rings yielded benzo[h][1,6]naphthyridines. Similarly, ring closure onto a phenyl ring from a benzothiophene-based iminyl yielded a benzo[b]thieno[2,3-c]quinoline. By way of contrast, iminyl radical ring closure onto pyridine rings was
这项研究旨在提供一种新的“清洁”的合成方法,该方法将能够有效地制备已知和新颖的N-杂环。发现O-苯基肟是具有各种受体侧链的亚氨基自由基的优异前体。由含有戊-4-烯受体的O-苯基肟以高收率制得双羟基吡咯。使用六-5-烯基受体的类似过程未产生二氢吡啶,可能是因为6- exo - trig亚胺基的闭环太慢,无法与H原子抽象竞争。来自具有戊-4-炔型侧链的前体的亚胺基进行闭环,然后重排以提供吡咯衍生物。合适地取代的亚氨基自由基容易地闭环在芳族受体上,因此使得能够使用多个多环系统。喹啉由3-苯基丙烷经O-苯基肟制得。由2-甲酰基联苯开始的菲啶的合成特别有效,这种方法可以制备天然产物三菲啶。从2-苯基烟碱醛衍生物开始,衍生的亚氨基自由基在苯环上的闭环产生苯并[ h]] [1,6]萘啶。类似地,将苯并噻吩基亚胺基的苯环闭环,得到苯并[ b ]噻吩并[2,3- c ]喹啉。相比之下,未观察到亚吡啶基自由基
Cascade C-C and C-N Bond Formation: A Straightforward Synthesis of Phenanthridines and Fused Quinolines
作者:Ashwini Borah、Pranjal Gogoi
DOI:10.1002/ejoc.201600220
日期:2016.4
Pd-catalyzed cascade process has been developed for the synthesis of quinoline and phenanthridine derivativesfrom various β-chloro α,β-unsaturatedaldehydes and 2-chloroaryl aldehydes, respectively, in good to high yields. The reaction proceeds through Pd-catalyzed cascade carbon–carbon and carbon–nitrogen bond formation in a single reaction vessel. The requisite β-chloro α,β-unsaturatedaldehydes were efficiently