Condensed cyclobutane aromatic compounds. XXX. Synthesis of some unusual 2,3-naphthoquinonoid heterocycles. A synthetic route to derivatives of naphtho[2,3-b]biphenylene and anthra[b]cyclobutene
Synergistic Activation of Amides and Hydrocarbons for Direct C(sp
<sup>3</sup>
)–H Acylation Enabled by Metallaphotoredox Catalysis
作者:Geun Seok Lee、Joonghee Won、Seulhui Choi、Mu‐Hyun Baik、Soon Hyeok Hong
DOI:10.1002/anie.202004441
日期:2020.9.21
amides as stable and readily accessible acyl surrogates. N‐acylsuccinimides served as efficient acyl reagents for the streamlined synthesis of synthetically useful ketones from simple C(sp3)−H substrates. Detailed mechanistic investigations using both computational and experimental mechanistic studies were performed to construct a detailed and complete catalytic cycle. The origin of the superior reactivity
Regioselective Annulation of Unsymmetrical 1,2-Phenylenebis(diaryl/diheteroarylmethanol): A Facile Synthesis of Anthracene, Tetracene, and Naphtho[<i>b</i>]thiophene Analogues
作者:Ramakrishnan Sivasakthikumaran、Settu Muhammad Rafiq、Elumalai Sankar、J. Arul Clement、Arasambattu K. Mohanakrishnan
DOI:10.1002/ejoc.201501087
日期:2015.12
A systematic study on the regioselective cyclization of benzene- and naphthalene-based unsymmetrical diols with HBr (33 %) in acetic acid at room temperature led to the formation of annulation products. By using this method, synthesis of a wide variety of anthracene, tetracene and naphtho[b]thiopheneanalogues was achieved in good to excellent yields. By employing HBr (33 %) in acetic acid as a catalyst
Synthesis and characterization of naphth-annelated thiophene analogs
作者:J. Arul Clement、Arasambattu K. Mohanakrishnan
DOI:10.1016/j.tet.2010.01.111
日期:2010.3
Synthesis of symmetrical and unsymmetrical naphth-annelated thienyl heterocycles has been achieved via thionation of hydroxyketones/diketones using Lawesson's reagent. Photophysical studies of 1,3-disubstituted naphtho[c]thiopheneanalogs are presented. Electro-oxidative behavior of these naphtha-annelated thiophenes are investigated using cyclic voltammeter.
通过使用Lawesson试剂对羟基酮/二酮进行硫磺化,已经完成了对称和不对称的萘环化噻吩基杂环的合成。提出了1,3-二取代萘[ c ]噻吩类似物的光物理研究。使用循环伏安法研究了这些石脑油-退火噻吩的电氧化行为。
ortho-Quinodimethane from anthracene epidioxide: Scope of the Diels–Alder reaction and mild preparation of naphthalene derivatives
作者:Bernard Siret、Sébastien Albrecht、Albert Defoin
DOI:10.1016/j.crci.2014.01.024
日期:2014.11
phenylenedioxy-ortho-quinodimethane 5 as a reactive transient. We presented herein the scope of the Diels–Alder reaction of this transient 5 with some dienophiles. In addition, a mild synthesis of naphthalene derivatives has been developed via base-induced cleavage of the obtained Diels–Alderadducts.