So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Maruoka, Keiji; Ito, Takayuki; Araki, Yoshitaka; Shirasaka, Tadashi; Yamamoto, Hisashi researched the compound: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol( cas:119707-74-3 ).Name: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol.They published the article 《Efficient synthesis of sterically hindered chiral binaphthol derivatives》 about this compound( cas:119707-74-3 ) in Bulletin of the Chemical Society of Japan. Keywords: binaphthol bistrialkylsilyl chiral; bromobisiloxybinaphthol lithiation rearrangement. We’ll tell you more about this compound (cas:119707-74-3).
Silylation of chiral dibromobinaphthol (R)-I (R = Br, R1 = H) with trialkylsilyl halides gave siloxy derivatives (R)-I (R = Br, R1 = SiR23; R2 = Me, Ph, C6H4CMe3-4, C6H3Me2-3,5; SiR23 = SiMe2CMe3, SiPh2CMe3) (II) in 80-97% yields. Treatment of siloxy derivatives II with Me3CLi gave the corresponding bis(trialkylsilyl)binaphthols (R)-I (R = SiR23, R1H)8 in 80-96% yields. (S)-I (R = SiPh3, R1 = H) was prepared similarly.
From this literature《Efficient synthesis of sterically hindered chiral binaphthol derivatives》,we know some information about this compound(119707-74-3)Name: (S)-3,3′-Dibromo-1,1′-bi-2-naphthol, but this is not all information, there are many literatures related to this compound(119707-74-3).
Reference:
Bromide – Wikipedia,
bromide – Wiktionary