2-Thiophenecarboxaldehyde, 5-iodo- → HCID 86678079, compound

HRID 2369764Notes

Reaction equation

HRID 2369764 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]([CH2:28][CH2:29][O:30][CH2:31][CH2:32][O:33][CH2:34][CH2:35][O:36][CH3:37])([CH2:18][CH2:19][O:20][CH2:21][CH2:22][O:23][CH2:24][CH2:25][O:26][CH3:27])[C:5]=2[CH:4]=1)#[CH:2].I[C:39]1[S:43][C:42]([CH:44]=[O:45])=[CH:41][CH:40]=1>C1(C)C=CC=CC=1.CCN(CC)CC.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.[Cu]I>[CH3:37][O:36][CH2:35][CH2:34][O:33][CH2:32][CH2:31][O:30][CH2:29][CH2:28][C:6]1([CH2:18][CH2:19][O:20][CH2:21][CH2:22][O:23][CH2:24][CH2:25][O:26][CH3:27])[C:7]2[CH:8]=[C:9]([C:16]#[C:17][C:39]3[S:43][C:42]([CH:44]=[O:45])=[CH:41][CH:40]=3)[CH:10]=[CH:11][C:12]=2[C:13]2[C:5]1=[CH:4][C:3]([C:1]#[C:2][C:39]1[S:43][C:42]([CH:44]=[O:45])=[CH:41][CH:40]=1)=[CH:15][CH:14]=2

Participants

7

Reactant 2

HCID 30143612-Thiophenecarboxaldehyde, 5-iodo-HCID 86678080HCID 86678080, compound

Product 1

HCID 86678079HCID 86678079, compoundYield 81.3%

Reagents, catalysts & solvents 4

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 1140TolueneSolventHCID 8471TriethylamineSolvent

Conditions

Temperature
40 °C

Procedure

Air was removed from a solution of 2,7-diethynyl-9,9-bis[2-[2-(2-methoxyethoxy)ethoxy]ethyl]-9H-fluorene (0.120 g, 0.237 mmol) in 8.2 mL of toluene and 1.8 mL of Et3N by blowing argon for 20 min. Then Pd(PPh3)2Cl2 (10 mg, 6 mol %) and CuI (2.7 mg, 6 mol %), and 5-iodothiophene-2-carboxaldehyde (0.135 g, 0.568 mmol) were added, and deaeration was continued for 15 min. Thereafter the mixture was stirred at 40° C. for 17 h. After completion of the reaction, reaction mixture was filtered and evaporated to dryness. The crude product was purified by column chromatography on silica gel (CH2Cl2/AcOEt 60:40 then AcOEt) to yield 0.140 g (81%) of 5,5′-[9,9-bis[2-[2-(2-methoxyethoxy)ethoxy]ethyl]-9H-fluorene-2,7-diyldi-2,1-ethynediyl]bis-2-thiophenecarboxaldehyde, mp 84° C.; 1H NMR (CDCl3) δ 2.43 (t, 4H, J=7.5 Hz), 2.79 (t, 4H, J=7.2 Hz), 3.21 (m, 4H), 3.33 (s, 6H), 3.39 (m, 4H), 3.54-3.46 (m, 8H), 7.37 (d, 2H, J=3.9 Hz), 7.57 (dd, 2H, J=1.5 Hz, J=7.1 Hz), 7.62 (d, 2H, J=1.2 Hz), 7.71 (d, 2H, J=7.1 Hz), 7.72 (d, 2H, J=3.9 Hz), 9.90 (s, 2H); 13C NMR (CDCl3) δ 39.6, 51.6, 59.0, 66.8, 70.1, 70.4, 70.5, 71.8, 83.0, 98.5, 120.5, 121.2, 126.6, 131.3, 132.6, 132.8, 136.2, 140.7, 143.9, 149.7, 182.5. HRMS (ESI) calcd for C41H42O8NaS2 [(M+Na)+] m/z 749.2219. found 749.2226. Anal. Calcd for C41H42O8S2 (726.90): C, 67.75; H, 5.82; S, 8.82. Found: C, 67.86; H, 5.82; S, 8.63.

Workup

  1. customfor 20 min
  2. customAfter completion of the reaction, reaction mixture
  3. filtrationwas filtered
  4. customevaporated to dryness
  5. customThe crude product was purified by column chromatography on silica gel (CH2Cl2/AcOEt 60:40

Sources & evidence

ORD record
ord-e48423adaf6c42a8ab5462eccf184b41
Source dataset
uspto-grants-2014_04
Patent number
US08709747B2

Reaction notes

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