Cumulene photochemistry: photorearrangments of tetraphenyl and triphenyl C3 isomers
作者:Michael W. Klett、Richard P. Johnson
DOI:10.1021/ja00299a036
日期:1985.6
Photoreactions dans des solvants aprotiques du tetraphenylallene, du triphenylallene, des triphenyl-1,2,3- et -1,3,3-cyclopropenes. Description des isomeres de l'indene diversement substitues figurant parmi les photoproduits. Mecanisme
光反应 dans des solvants aprotiques du tetraphenylallene, du triphenylallen, des triphenyl-1,2,3- et -1,3,3-cyclopropenes。描述 des isomeres de l'indene 多样性替代 figurant parmi les photoproduits。机制
Palladium-Catalyzed Formal [4 + 1] Annulation via Metal Carbene Migratory Insertion and C(sp<sup>2</sup>)–H Bond Functionalization
作者:Shuai Xu、Ri Chen、Zihao Fu、Qi Zhou、Yan Zhang、Jianbo Wang
DOI:10.1021/acscatal.6b03562
日期:2017.3.3
A highly efficient and operationally simple palladium-catalyzed formal [4 + 1] annulationreaction has been developed. The reaction is featured by the formation of two different C–C bonds on a carbenic center. It represents a concise method for the synthesis of a wide range of polycyclic aromatic hydrocarbons (PAHs) and 1H-indenes with easily available (trimethylsilyl)diazomethane as the carbene source
ALIPHATIC CHEMISTRY OF FLUORENE: PART V. SPIRO-KETONES
作者:P. M. G. Bavin
DOI:10.1139/v60-153
日期:1960.7.1
A novel synthesis is described of 1,2;3,4-dibenzophenanthrene, based on the spiro-ketone (IIIb), which was cleaved by strong base to the acid (VIIb).An example is described of acylation of aliphatic carbon.
Efficient annulation of vic-diborylalkenes and -arenes with vic-bromo(bromomethyl)arenes has been achieved, using Pd(PPh3)4 as a catalyst in the presence of Cs2CO3 and water in THF at 60 ËC, giving rise to the corresponding indene and fluorene derivatives in good to high yields.
Joining the rings: the preparation of 2- and 3-indenyl-triptycenes, and curious related processes
作者:Kirill Nikitin、Helge Müller-Bunz、Yannick Ortin、Michael J. McGlinchey
DOI:10.1039/b703437g
日期:——
is accompanied by a novel palladium-catalysed carbocyclisation reaction leading to the indenophenanthrylene . The addition of benzyne to 9-(3-indenyl)anthracene, , yields the corresponding indenyltriptycene, , and, surprisingly, the anthracenyl methano-bridged phenanthrene . It has been demonstrated that 2-arylindenes can act as 1,3-dienes in the [4 + 2] cycloadditions of benzyne. The products , , and