27130-32-1Relevant articles and documents
PBr3-mediated cyclization of 1,7-diyn-3,6-bis(propargyl carbonate)s: Synthesis of 5-bromotetracenes
Sun, Ning,Chen, Haoyi,Li, Xiangdong,Xu, Murong,Gan, Yi,Zhang, Liangwei,Liu, Yuanhong
, p. 10051 - 10061 (2018/05/31)
A new and straightforward method for the synthesis of 5-bromotetracenes through PBr3-mediated cyclization of 1,7- diyn-3,6-bis(propargyl carbonate)s has been developed. This method offers several advantages such as easily accessible starting materials, high efficiency, and wide functional group compatibility. In addition, chloro- and iodo-substituted tetracenes were also synthesized using appropriate halogenating reagents. The utility of the 5-bromotetracene products has been illustrated by their efficient transformations through various palladium-catalyzed cross-coupling reactions.
A new synthetic route to substituted tetracenes and pentacenes via stereoselective [4+2] cycloadditions of 1,4-dihydro-1,4-epoxynaphthalene and isobenzofuran
Eda, Shohei,Eguchi, Fumiaki,Haneda, Hiroshi,Hamura, Toshiyuki
, p. 5963 - 5966 (2015/03/30)
Stereoselective [4+2] cycloadditions of 1,4-dihydro-1,4-epoxynaphthalene and isobenzofuran were described. Among several possibilities, syn-exo and/or anti-endo isomers were selectively produced depending on the substitution pattern of the reactants. Importantly, the syn-exo isomer underwent acid promoted aromatization, affording the corresponding tetracene. These findings enabled us to prepare a substituted pentacene with electron withdrawing groups.
Palladium-catalyzed highly efficient synthesis of tetracenes and pentacenes
Chen, Ming,Chen, Yifeng,Liu, Yuanhong
supporting information, p. 12189 - 12191 (2013/01/16)
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. The Royal Society of Chemistry 2012..
