Synthesis of spirocyclic diarylfluorenes by one-pot twofold SNAr reactions of diaryl sulfones with diarylmethanes
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.
Bhanuchandra,Yorimitsu, Hideki,Osuka, Atsuhiro
supporting information
p. 384 - 387
(2016/02/19)
Dibenzothiophenes and related compounds. II. Reactions of 5 substituted dibenzothiophenium salts with organolithiums
-
Hori,Kataoka,Shimizu,Miyagaki
p. 1711 - 1720
(2007/10/05)
More Articles about upstream products of 53904-86-2