Synthesis of Phenanthrene‐Based Polycycles by Gold(I)‐Catalyzed Cyclization of Biphenyl‐Embedded Trienynes
作者:Ana Milián、Patricia García‐García、Juan J. Vaquero、Roberto Sanz、Manuel A. Fernández‐Rodríguez
DOI:10.1002/adsc.202200887
日期:2022.11.22
Gold(I)-catalyzedcyclization of o-alkenyl-o’-alkynylbiaryls in the presence of external or internal nucleophiles provides a straightforward access to phenanthrene-based polycycles, which are of considerable interest in materials science. Thus, their reactions with alcohols yield functionalized dihydrophenanthrenes, in a process that can also be carried out intramolecularly, to provide phenanthrene-derived
在外部或内部亲核试剂存在下,金 (I) 催化的o -烯基- o' -炔基联芳基环化提供了一种直接获得基于菲的多环化合物的途径,这在材料科学中具有相当大的意义。因此,它们与醇的反应产生功能化的二氢菲,该过程也可以在分子内进行,以提供菲衍生的杂多环化合物。此外,苯并[ b ]苯并[b]联苯可以由o-甲氧基乙烯基-o'-炔基联芳基合成,在其中三键上的(杂)芳基取代基充当内部亲核试剂的反应中。
Fieser; Dietz, Chemische Berichte, 1929, vol. 62, p. 1831
作者:Fieser、Dietz
DOI:——
日期:——
Rapid, convergent, and regioselective synthesis of anthracenes
作者:John J. Fitzgerald、Neville E. Drysdale、R. A. Olofson
DOI:10.1021/jo00052a027
日期:1992.12
Anthracenes are obtained in moderate to good yield by the simultaneous treatment of benzocyclobutenols and halobenzenes with LTMP in tetrahydropyran. In the key step of this one-pot process, o-toluoyl anion intermediates from the known ring-opening of benzocyclobutenoxides add to halobenzene derived arynes. Methoxy-substituted benzocyclobutenols which are readily made regiospecifically by known methods also react regiospecifically with the single benzyne generated from either a 2- or 3-haloanisole. For example, the only trimethoxyanthracene isolated (48% yield) from the reaction of 6-methoxybenzocyclobutenol (8) with 5-chloro-1,3-dimethoxybenzene is the 1,3,8-isomer 20. When 1,2-dihydrocyclobuta[l]phenanthren-1-ol (14) and/or halonaphthalenes are the reactants, benzannulated anthracenes are formed; e.g., tribenz[a,c,h]anthracene in 68% yield from 14 and bromonaphthalene. In another extension, pentaphene (31) was made in one pot from o-dichlorobenzene.
A Facile Synthesis of Some Polycyclic Hydrocarbons: Application of Phase Transfer Catalysis in the Bis-Wittig Reaction
作者:Abraham Minsky、Mordecai Rabinovitz
DOI:10.1055/s-1983-30401
日期:——
Diels-Alder reactivity of polycyclic aromatic hydrocarbons. 1. Acenes and benzologs