1-Bromododecane → 5-(4-Dodecyloxy-phenyl)-10,15,20-tris-(4-hydroxy-phenyl)-porphyrin

HRID 661810Notes

Reaction equation

HRID 661810 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:9]3[NH:13][C:12]([C:14]([C:46]4[CH:51]=[CH:50][C:49]([OH:52])=[CH:48][CH:47]=4)=[C:15]4[N:45]=[C:18]([C:19]([C:38]5[CH:43]=[CH:42][C:41]([OH:44])=[CH:40][CH:39]=5)=[C:20]5[NH:37][C:23](=[C:24]([C:30]6[CH:35]=[CH:34][C:33]([OH:36])=[CH:32][CH:31]=6)[C:25]6[CH:26]=[CH:27][C:28]=2[N:29]=6)[CH:22]=[CH:21]5)[CH:17]=[CH:16]4)=[CH:11][CH:10]=3)=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[CH2:59](Br)[CH2:60][CH2:61][CH2:62][CH2:63][CH2:64][CH2:65][CH2:66][CH2:67][CH2:68][CH2:69][CH3:70]>CN(C=O)C>[CH2:70]([O:52][C:49]1[CH:48]=[CH:47][C:46]([C:14]2[C:12]3[NH:13][C:9]([C:8]([C:5]4[CH:6]=[CH:7][C:2]([OH:1])=[CH:3][CH:4]=4)=[C:28]4[N:29]=[C:25]([C:24]([C:30]5[CH:31]=[CH:32][C:33]([OH:36])=[CH:34][CH:35]=5)=[C:23]5[NH:37][C:20](=[C:19]([C:38]6[CH:43]=[CH:42][C:41]([OH:44])=[CH:40][CH:39]=6)[C:18]6[CH:17]=[CH:16][C:15]=2[N:45]=6)[CH:21]=[CH:22]5)[CH:26]=[CH:27]4)=[CH:10][CH:11]=3)=[CH:51][CH:50]=1)[CH2:69][CH2:68][CH2:67][CH2:66][CH2:65][CH2:64][CH2:63][CH2:62][CH2:61][CH2:60][CH3:59]

Participants

5

Reactant 3

HCID 89191-BromododecaneHCID 11430Potassium CarbonateHCID 1354380305,10,15,20-Tetrakis(4-hydroxyphenyl)porphyrin

Product 1

HCID 1360491745-(4-Dodecyloxy-phenyl)-10,15,20-tris-(4-hydroxy-phenyl)-porphyrin

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Conditions

Temperature
55 °C

Procedure

5,10,15,20-tetrakis-(4-Hydroxy-phenyl)-porphyrin (200 mg, 0.294 mmol) is dissolved and potassium carbonate (487 mg, 3.53 mmol, 12 eqv.) in suspended under argon in absolute DMF (50 mL) and the mixture is heated to 55° C. A solution of dodecyl bromide (49.4 μl, 0.206 mmol), 0.7 eqv.) in absolute DMF (10 mL) is added dropwise during 30 min. The mixture is stirred at 55° C. for 2 h. The solvent is removed in vacuo at 50° C., water (80 mL) is added and the mixture extracted with ethyl acetate (3×40 mL). The combined organic fractions are dried (Na2SO4) and the solvent evaporated. The product is isolated by chromatography on a column (300 g) of silica. Tetra-alkylated and tri-alkylated compounds are eluted with toluene:ethyl acetate (30:1 by vol.), di-substituted compound (trans-isomer) with toluene:ethyl acetate (15:1 by vol.), di-substituted compound (cis-isomer) with toluene:ethyl acetate (10:1 by vol.) and the desired product (mono-alkylated compound) with toluene:ethyl acetate (5:1 by vol). Solvent is removed in vacuo and the residue dried at high vacuum to give product as a violet solid.

Workup

  1. customThe solvent is removed in vacuo at 50° C.
  2. additionwater (80 mL) is added
  3. extractionthe mixture extracted with ethyl acetate (3×40 mL)
  4. dry with materialThe combined organic fractions are dried (Na2SO4)
  5. customthe solvent evaporated
  6. customThe product is isolated by chromatography on a column (300 g) of silica
  7. washTetra-alkylated and tri-alkylated compounds are eluted with toluene:ethyl acetate (30:1 by vol.), di-substituted compound (trans-isomer) with toluene:ethyl acetate (15:1 by vol.), di-substituted compound (cis-isomer) with toluene:ethyl acetate (10:1 by vol.)
  8. customSolvent is removed in vacuo
  9. customthe residue dried at high vacuum
  10. customto give product as a violet solid

Sources & evidence

ORD record
ord-98a0e95882184797b423b419bec0ff75
Source dataset
uspto-grants-2011_12
Patent number
US08084602B2

Reaction notes

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