445498-74-8

Basic information

• Product Name: C₆₅H₇₂S₄
• Synonyms: C₆₅H₇₂S₄
• CAS NO: 445498-74-8
• Molecular Weight: 981.551
• Mol File: 445498-74-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: C₆₅H₇₂S₄(CAS DataBase Reference)
• NIST Chemistry Reference: C₆₅H₇₂S₄(445498-74-8)
• EPA Substance Registry System: C₆₅H₇₂S₄(445498-74-8)

Safety Data

• Hazardous Substances Data: 445498-74-8(Hazardous Substances Data)

Upstream product

• 67665-47-8 2,2′-dibromo-9,9′-spirobi[9H-fluorene] 

Relevant articles and documents

Head-to-tail regioregular oligothiophene-functionalized 9,9′-spirobifluorene derivatives. 1. Synthesis

Two series of novel fully conjugated oligomers, oligothiophene-functionalized 9,9′-spirobifluorene derivatives, have been developed in this contribution. First, four 9,9′-spirobifluorene bromide derivatives (compounds 1a-d) are prepared through various synthetic routes. Oligothiophene derivatives with or without substituents are synthesized through the Grignard and Suzuki coupling reactions. The Negishi coupling reactions between oligothienylzinc chloride and various 9,9′spirobifluorene bromides with Pd(PPh3)4 as catalyst successfully produce the desired compounds, unsubstituted oligothiophene-functionalized 9,9′-spirobifluorene derivatives, compounds 2 to 4ad. Since the Negishi coupling reactions afford regioregularly head-to-tail (H-T) oligo(4-nhexylthiophene)-functionalized 9,9′-spirobifluorene derivatives in poor yields, the Suzuki coupling reactions between sodium 4-n-hexylthienyl-2-boronate 8, and various 9,9′-spirobifluorene-based bromides 1a-d and 9-16 are employed to produce highly regioregular head-to-tail oligothiophenefunctionalized 9,9′-spirobifluorene derivatives (compounds 5 to 7a-d) in very high yields. We also investigate the effect of solvents on the Suzuki coupling reactions. The structure and purity of all compounds are verified by FT-IR, 1H and 13C NMR, MS, and elemental analysis.