Synthesis and Reactions of a Stable 1,2-Diaryl-1,2-dibromodisilene: A Precursor for Substituted Disilenes and a 1,2-Diaryldisilyne
摘要:
Synthesis and isolation of the stable diaryldibromodisilene, Bbt (Br)Si =(Br)Bbt, has been accomplished for the first time. The dibromodisilene underewent substitution reactions with organometallic reagents on the low-coordinated silicon atom to afford the corresponding substituted disilenes. Futhermore, the reaction of 1 with t-BuLi afforded the corresponding 1,2-diaryldisilyne, BbtSi SiBbt, the characters of which were revealed by spectroscopic and crystallographic analyses.
Synthesis and Reactions of a Stable 1,2-Diaryl-1,2-dibromodisilene: A Precursor for Substituted Disilenes and a 1,2-Diaryldisilyne
摘要:
Synthesis and isolation of the stable diaryldibromodisilene, Bbt (Br)Si =(Br)Bbt, has been accomplished for the first time. The dibromodisilene underewent substitution reactions with organometallic reagents on the low-coordinated silicon atom to afford the corresponding substituted disilenes. Futhermore, the reaction of 1 with t-BuLi afforded the corresponding 1,2-diaryldisilyne, BbtSi SiBbt, the characters of which were revealed by spectroscopic and crystallographic analyses.
2‐dibromodisilenes ((E)‐Ar(Br)SiSi(Br)Ar) with N‐heterocyclic carbenes (NHC) afforded NHC–arylbromosilylene adducts or bromide salts of the corresponding bis‐NHC adducts of the formal arylsilyliumylidene cations ([ArSi:]+). In some cases, an NHC was able to replace a bromide anion in the coordination sphere of the arylbromosilylene–NHC adduct.