Palladium-catalyzed highly efficient synthesis of tetracenes and pentacenes
作者:Ming Chen、Yifeng Chen、Yuanhong Liu
DOI:10.1039/c2cc36700a
日期:——
Pd(0)-catalyzed cascade reactions of 1,7-diyn-3,6-bis(propargyl carbonate) with organoboronic acids have been developed, which provide one-pot access to functionalized tetracenes or pentacenes.
Integrated Catalytic C−H Transformations for One-Pot Synthesis of 1-Arylisoindoles from Isoindolines via Palladium-Catalyzed Dehydrogenation Followed by C−H Arylation
A one-pot conversion of isoindolines to 1-arylisoindoles was established from palladium-catalyzed cascade C−H transformations, that is, the dehydrogenation of isoindolines to give isoindoles, with subsequent C−H arylation of the isoindoles.
Action of Phenylmagnesium Bromide on Anthraquinones. II
作者:C. F. H. Allen、Alan Bell
DOI:10.1021/ja01866a042
日期:1940.9
This preliminary report of the action of phenylmagnesiumbromide on anthraquinone contains the description of a procedure for avoiding the recovery of large amounts of unchanged quinone, with consequent increasing of the yield. Butyl ether is preferable to toluene for "forced" Grignard reactions.
prepared from diiodobutadienes reacted with diiodobenzene or diiodonaphthalene to afford substituted naphthalene, anthracene, dihydronaphthacene, and dihydropentacene derivatives in the presence of CuCl and DMPU. Dihydronaphthacene and dihydropentacene derivatives were converted into the corresponding naphthacene and pentacene derivatives.