Synthesis and Characterization of Diphosphenes Bearing Fused‐Ring Bulky Rind Groups

Li, Baolin; Tsujimoto, Shota; Li, Yongming; Tsuji, Hayato; Tamao, Kohei; Hashizume, Daisuke; Matsuo, Tsukasa

doi:10.1002/hc.21197

Cited by 11 publications

(13 citation statements)

References 37 publications

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“…In the crystal, the SiHBr2 group is fixed in one conformation with respect to the rotamer around the Si-C bond. A similar conformation was also observed in the crystal of (Eind)PCl2 [44]. The Si-C bond length for 4a (1.8746(18) Å) is comparable to those of typical Si-C bonds (ca.…”

Section: Reactions Of (Eind)sihbr 2 (4a) With Nhcssupporting

confidence: 80%

Synthesis and Characterization of N-Heterocyclic Carbene-Coordinated Silicon Compounds Bearing a Fused-Ring Bulky Eind Group

et al. 2018

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Abstract:The reactions of the fused-ring bulky Eind-substituted 1,2-dibromodisilene, (Eind)BrSi=SiBr(Eind) (1a) (Eind = 1,1,3,3,5,5,7,7-octaethyl-s-hydrindacen-4-yl (a)), with N-heterocyclic carbenes (NHCs) (Im-Me 4 = 1,3,4,5-tetramethylimidazol-2-ylidene and Im-i Pr 2 Me 2 = 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene) are reported. While the reaction of 1a with the sterically more demanding Im-i Pr 2 Me 2 led to the formation of the mono-NHC adduct of arylbromosilylene, (Im-i Pr 2 Me 2 )→SiBr(Eind) (2a ), a similar reaction using the less bulky Im-Me 4 affords the bis-NHC adduct of formal arylsilyliumylidene cation, [(Im-Me 4 ) 2 →Si(Eind)] + [Br − ] (3a). The NHC adducts 2a and 3a can also be prepared by the dehydrobromination of Eind-substituted dibromohydrosilane, (Eind)SiHBr 2 (4a), with NHCs. The NHC-coordinated silicon compounds have been characterized by spectroscopic methods. The molecular structures of bis-NHC adduct, [(Im-i Pr 2 Me 2 ) 2 →Si(Eind)] + [Br − ] (3a ), and 4a have been determined by X-ray crystallography.

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Section: Reactions Of (Eind)sihbr 2 (4a) With Nhcssupporting

confidence: 80%

Synthesis and Characterization of N-Heterocyclic Carbene-Coordinated Silicon Compounds Bearing a Fused-Ring Bulky Eind Group

et al. 2018

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“…To hinder rotation of the ortho ‐substituents of the phenyl group, the protecting group Omoha11 was prepared and tested in an attempt to produce a more congested protecting environment (Entry 49). Matsuo and Tamao12 have utilized the Eind and EMind groups for studies on steric protection capability (Entries 50 and 51).…”

Section: 31p Nmr and X‐ray Analysis Of Diphosphenesmentioning

confidence: 99%

“…As a slightly customized method (M5), a half equivalent amount of tert ‐butyllithium followed by additional base affords diphosphenes 8,9. Electron transfer reagents such as lithium naphthalenide give diphosphenes (M6) 10–12…”

Section: Introductionmentioning

confidence: 99%

Sterically Protected Diphosphenes

Yoshifuji

2015

Eur J Inorg Chem

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“…International Research Center for Elements Science (IRCELS) PMe 3 [9] by at wo-step procedure (step a). Tr eatment of [Pt(cod) 2 ]w ith Eind 2 -BPEP and PPh 3 at room temperature afforded the desired complex 1 (step b), which was isolated as green crystals and characterized by NMR spectroscopy and elemental analysis.Similarly,the Pd and Ni complexes 2 and 3 were prepared from [Pd(h 5 -C 5 H 5 )(h 3 -C 3 H 5 )] and [Ni(cod) 2 ], respectively.…”

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confidence: 99%