2-Thiophenecarboxaldehyde, 5-iodo- → HCID 86678076, compound

HRID 2369760Notes

Reaction equation

HRID 2369760 reaction equation
[C:1]([C:3]1[CH:15]=[CH:14][C:13]2[C:12]3[C:7](=[CH:8][C:9]([C:16]#[CH:17])=[CH:10][CH:11]=3)[C:6]([CH2:22][CH2:23][CH2:24][CH3:25])([CH2:18][CH2:19][CH2:20][CH3:21])[C:5]=2[CH:4]=1)#[CH:2].I[C:27]1[S:31][C:30]([CH:32]=[O:33])=[CH:29][CH:28]=1>C1(C)C=CC=CC=1.CCN(CC)CC.[Cu]I.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH2:22]([C:6]1([CH2:18][CH2:19][CH2:20][CH3:21])[C:7]2[CH:8]=[C:9]([C:16]#[C:17][C:27]3[S:31][C:30]([CH:32]=[O:33])=[CH:29][CH:28]=3)[CH:10]=[CH:11][C:12]=2[C:13]2[C:5]1=[CH:4][C:3]([C:1]#[C:2][C:27]1[S:31][C:30]([CH:32]=[O:33])=[CH:29][CH:28]=1)=[CH:15][CH:14]=2)[CH2:23][CH2:24][CH3:25]

Participants

6

Reactant 2

HCID 30143612-Thiophenecarboxaldehyde, 5-iodo-HCID 86678075HCID 86678075, compound

Product 1

HCID 86678076HCID 86678076, compoundYield 97.4%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 22504574Toluene triethylamineSolvent

Conditions

Temperature
40 °C

Procedure

Air was removed from a solution of 2,7-diethynyl-9,9-dibutyl-9H-fluorene (0.150 g, 0.460 mmol) and 5-iodothiophene-2-carboxaldehyde (Wu, L.-H.; Chu, C.-S.; Janarthanan, N.; Hsu, C.-S. J. Polym. Res. 2000, 7, 125-134) (0.251 g, 1.06 mmol) in 6.5 mL of toluene/Et3N (4/1) by blowing argon for 20 min. Then CuI (7.0 mg, 0.0037 mmol) and Pd(PPh3)2Cl2 (27 mg, 0.0039 mmol) were added, and deaeration was continued for 10 min. Thereafter the mixture was stirred at 40° C. for 16 h. The solvent was removed under reduced pressure, and the crude product was purified by column chromatography (heptane/CH2Cl2 50:50 then 40:60) to yield 245 mg (97%) of 5,5′-(9,9-dibutyl-9H-fluorene-2,7-diyldi-2,1-ethynediyl)bis-2-thiophenecarboxaldehyde; 1H NMR (300.13 MHz, CDCl3) δ 9.80 (s, 2H), 7.61 and 7.26 (AX, JAX=3.9 Hz, 4H), 7.62 (d, J=8.5 Hz, 2H), 7.47 (d, J=8.5 Hz, 2H), 7.45 (s, 2H), 1.93 (m, 4H), 1.02 (m, 4H), 0.60 (t, J=7.3 Hz, 6H), 0.51 (m, 4H); 13C NMR (75.46 MHz, CDCl3) δ 182.4, 151.4, 143.9, 141.4, 136.1, 133.0, 132.5, 131.0, 126.0, 120.9, 120.4, 98.9, 82.6, 55.3, 40.1, 25.9, 23.0, 13.8; HRMS (ESI) calcd for C35H30O2S2 (M+·) m/z 546.16872. found 546.1687.

Workup

  1. customfor 20 min
  2. customThe solvent was removed under reduced pressure
  3. customthe crude product was purified by column chromatography (heptane/CH2Cl2 50:50

Sources & evidence

ORD record
ord-bafe06b25218426e81261ae1df4244e6
Source dataset
uspto-grants-2014_04
Patent number
US08709747B2

Reaction notes

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