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1-Pyrenebutanoic acid
CAS number: 3443-45-6
1-Pyrenebutanoic acid is a conjugated polymer that has a large π system and a carboxylic group. It is majorly used in surface functionalization.

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Reagents and conditions: (i) LiAlH4, Et2O, 0 1C, 1 h, then Boc2O, rt, 1 h; (ii) NBS, DMF, 0 1C, 4 h; (iii) TFA, CH2Cl2, rt, 1 h; (iv) 1-pyrenebutyric acid, EDCI, DPTS, CH2Cl2, rt, 1 h; (v) 5-(tributyltin)- 2,20-bithiophene, Pd(PPh3)4, DMF, 80 1C, 18 h; (vi) Pd(PPh3)4, DMF, toluene, 80 1C, 18 h; (vii) NaH, DMF, 2-ethylhexyl bromide; (viii) THF, nBuLi, -78 1C, 2 h, Bu3SnCl.
Reagents and conditions: (i) LiAlH4, Et2O, 0 1C, 1 h, then Boc2O, rt, 1 h; (ii) NBS, DMF, 0 1C, 4 h; (iii) TFA, CH2Cl2, rt, 1 h; (iv) 1-pyrenebutyric acid, EDCI, DPTS, CH2Cl2, rt, 1 h; (v) 5-(tributyltin)- 2,20-bithiophene, Pd(PPh3)4, DMF, 80 1C, 18 h; (vi) Pd(PPh3)4, DMF, toluene, 80 1C, 18 h; (vii) NaH, DMF, 2-ethylhexyl bromide; (viii) THF, nBuLi, -78 1C, 2 h, Bu3SnCl.

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