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CS-W001157 4
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2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane

  • CAS No. 546-56-5

  • Cat. No. CS-0197275
  • Purity≥98%
  • MDL No.None

*For research and further manufacturing use only, not for direct human use.

2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane|CS-0197275

Structure of 546-56-5

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General Information

  • CAS No. 546-56-5
  • Cat. No. CS-0197275
  • Purity ≥98%
  • MDL No. None
  • Storage 4°C
  • Shipping Room temperature in continental US; may vary elsewhere.
  • Molecular Formula C₄₈H₄₀O₄Si₄
  • Molecular Weight 793.17
  • Synonym(s) Octaphenyltetracyclosiloxane
  • SMILES C1=CC=C(C=C1)[Si]2(C3=CC=CC=C3)O[Si](C4=CC=CC=C4)(C5=CC=CC=C5)O[Si](C6=CC=CC=C6)(C7=CC=CC=C7)O[Si](C8=CC=CC=C8)(C9=CC=CC=C9)O2

Description

This octaphenyl-substituted tetrasiloxane features a robust, electron-rich cage architecture that enhances thermal stability and solubility in organic media. The eight phenyl groups provide steric protection around the siloxane backbone, minimizing reactivity while enabling straightforward incorporation into functional polymers and high-performance materials.

Application

2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane serves as a stable, bench-ready siloxane-based building block for the construction of complex organosilicon architectures. Its eight phenyl groups confer high thermal and oxidative stability, while the tetraoxa-bridged tetrasilane core enables predictable reactivity in hydrosilylation and cross-coupling transformations. Functions effectively as a precursor for siloxane-linked scaffolds in polymer chemistry and materials science applications.

Synthesis

  • Route1

    References

    • Albright, Abigail; Gawley, Robert E. Tetrahedron Letters, 2011 , vol. 52, # 46 p. 6130 - 6132
  • Route2
    • null|null
      947-42-2
    • ~91%
    • In-stock
      2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane|CS-0197275
      546-56-5

    References

    • Luo, Mei; Yan, Bing Tetrahedron Letters, 2009 , vol. 50, # 37 p. 5208 - 5209
  • Route3
    • null|null
      80-10-4
    • ~%
    • In-stock
      2,2,4,4,6,6,8,8-Octaphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane|CS-0197275
      546-56-5

    References

    • Journal of the Chemical Society, , vol. 101, p. 2108 Journal of the American Chemical Society, vol. 67, p. 2174 Journal of the American Chemical Society, , vol. 67, p. 2173 Anm.6 Journal of the Chemical Society, , p. 1428,1430

Safety Information

Download SDS
GHS Pictogram :
GHS No : GHS07
Signal Word : Warning
UN#: N/A
Class : N/A
Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

Quality Control

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Computational Chemistry Data

  • TPSA   36.92
  • LogP   5.0928
  • H_Acceptors   4
  • H_Donors   0
  • Rotatable_Bonds   8

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