1610619-46-9Relevant articles and documents
Synthesis of spirocyclic diarylfluorenes by one-pot twofold SNAr reactions of diaryl sulfones with diarylmethanes
Bhanuchandra,Yorimitsu, Hideki,Osuka, Atsuhiro
supporting information, p. 384 - 387 (2016/02/19)
Treatment of dibenzothiophene dioxides with cyclic diarylmethanes in the presence of KN(SiMe3)2 results in the formation of fluorene-based spirocyclic tetraarylmethanes in a single operation. The transformation would proceed via an intermolecular SNAr reaction of the dioxides with cyclic diarylmethylpotassium followed by intramolecular SNAr cyclization. This straightforward strategy provides a wide range of spirocyclic diarylfluorenes including unusual ones that are otherwise difficult to synthesize.
Diels-alder reaction of 1,3-diarylbenzo[ c ]furans with thiophene S,S -dioxide/indenone derivatives: A facile preparation of substituted dibenzothiophene S,S-dioxides and fluorenones
Nandakumar, Meganathan,Karunakaran, Jayachandran,Mohanakrishnan, Arasambattu K.
supporting information, p. 3068 - 3071 (2014/06/23)
One pot syntheses of substituted dibenzothiophene S,S-dioxides and fluorenones were successfully achieved by Diels-Alder reaction of benzo[c]furans with thiophene S,S-dioxides and indenones, respectively. Photophysical properties of representative seven- and nine-membered dibenzothiophene S,S-dioxide acenes were also reported.