1552276-77-3

Upstream product

• 994-30-9 triethylsilyl chloride 
• 116934-63-5 4-bromo-4'-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1,1'-biphenyl 

Downstream Products

• 1552276-78-4 4'-[4-(4-bromophenyl)-1,4-bis(triethylsiloxy)-2,5-cyclohexadien-1-yl]-[1,1'-biphenyl]-4-ol 
• 1552276-80-8 1,4-bis[4-(4-bromophenyl)-1,4-bis(triethylsiloxy)-2,5-cyclohexadien-1-yl]benzene 
• 1552276-79-5 C₃₆H₄₇BrO₄Si₂ 

Relevant academic research and scientific papers

Synthesis and characterization of [5]cycloparaphenylene

The synthesis of highly strained [5]cycloparaphenylene ([5]CPP), a structural unit of the periphery of C60 and the shortest possible structural constituent of the sidewall of a (5,5) carbon nanotube, was achieved in nine steps in 17% overall yield. The synthesis relied on metal-mediated ring closure of a triethylsilyl (TES)-protected masked precursor 1c followed by removal of the TES groups and subsequent reductive aromatization. UV-vis and electrochemical studies revealed that the HOMO-LUMO gap of [5]CPP is narrow and is comparable to that of C60, as predicted by theoretical calculations. The results suggest that [5]CPP should be an excellent lead compound for molecular electronics.