Cu(<scp>i</scp>)-Catalyzed addition–cycloisomerization difunctionalization reaction of 1,3-enyne-alkylidenecyclopropanes (ACPs)
作者:Peng-Hua Li、Yin Wei、Min Shi
DOI:10.1039/d0ob01692f
日期:——
A copper(I)-catalyzed three-component addition–cycloisomerization difunctionalization reaction of 1,3-enyne-ACPs with Togni I reagent and TMSCN under mild reaction conditions has been developed, affording 3-trifluoroethylcyclopenta[b]naphthalene-4-carbonitrile derivatives. The reaction proceeded through a copper(I)-catalyzed 1,4-addition of conjugated 1,3-enynes via a radical relay process and aromatic
开发了铜(I)在温和的反应条件下,用Togni I试剂和TMSCN在1,3-烯炔-ACPs上催化铜的三组分加成-环异构化双官能化反应,得到3-三氟乙基环戊[ b ]萘-4-甲腈衍生物。通过铜进行反应(我)催化的1,4-加成共轭1,3-烯炔的通过自由基中继处理和丙二烯-ACP中间体的芳族环异构。
Assembly of substituted phenanthridines via a cascade palladium-catalyzed coupling reaction, deprotection and intramolecular cyclization
is presented. In the presence of Pd(PPh3)4, accessible precursors undergo a Suzuki cross-coupling reaction with 2-(Boc-amino)benzeneboronic acid pinacol ester and then spontaneously undergo deprotection and intramolecular condensation to form the corresponding phenanthridines in one step. This reaction has a wide range of substrates with various functional groups, and the corresponding products have
An efficient, one-pot synthesis of 4-methylisoquinolines via a cascade Pd-catalyzed Heck reaction, intramolecularcyclization and isomerization has been developed. This reaction has a wide range of substrates with various functional groups, and the corresponding products have been obtained in good yields.
Ag(I)‐Catalyzed/Acid‐Mediated Cascade Cyclization of
<i>ortho</i>
‐Alkynylaryl‐1,3‐dicarbonyls to Access Arylnaphthalenelactones and Furanonaphthol Libraries via Aryl‐Disengagement
ortho-Alkynylaryl-1,3-dicarbonyl derivatives were utilized for the synthesis of arylnaphthalenelactone via cascadecyclization/decarboxylation in one-pot. These classes of compounds showed good potency in inhibiting protein-tyrosine phosphatase 1B (PTP1B) enzyme.
Novel transformation of aryl 2-iodophenyl ketones into 1,3-diarylisoquinolines with (TMS)2NH, styrenes, NIS, and BuOK
作者:Kaho Shibasaki、Hideo Togo
DOI:10.1016/j.tet.2020.131864
日期:2021.1
Treatment of aryl 2-iodophenyl ketones with TMS2NH in the presence of Sc(OTf)3 at warming conditions, followed by the reaction with styrenes and NIS gave N-(1-aryl-2-iodoethyl) aryl 2-iodophenyl ketimines. Further treatment of N-(1-aryl-2-iodoethyl) aryl 2-iodophenyl ketimines with tBuOK in the presence of 1,10-phenanthroline at 120 °C generated 1,3-diarylisoquinolines in moderate yields through SET