Potassium hydride → N-trityl-1-[4-(benzoxazol-2-yl)benzyloxy]-3-(4-phenylbutoxy)-2-propanamine

HRID 863852Notes

Reaction equation

HRID 863852 reaction equation
[C:1]([NH:20][CH:21]([CH2:40][OH:41])[CH2:22][O:23][CH2:24][C:25]1[CH:30]=[CH:29][C:28]([C:31]2[O:32][C:33]3[CH:39]=[CH:38][CH:37]=[CH:36][C:34]=3[N:35]=2)=[CH:27][CH:26]=1)([C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1)([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[H-].[K+].[C:44]1([CH2:50][CH2:51][CH2:52][CH2:53]I)[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1>C1COCC1>[C:1]([NH:20][CH:21]([CH2:40][O:41][CH2:53][CH2:52][CH2:51][CH2:50][C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1)[CH2:22][O:23][CH2:24][C:25]1[CH:26]=[CH:27][C:28]([C:31]2[O:32][C:33]3[CH:39]=[CH:38][CH:37]=[CH:36][C:34]=3[N:35]=2)=[CH:29][CH:30]=1)([C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)([C:14]1[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=1)[C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1

Participants

5

Reactant 3

HCID 82127Potassium hydrideHCID 12709818(4-Iodobutyl)benzeneHCID 19420787N-trityl-1-[4-(benzoxazol-2-yl)benzyloxy]-3-hydroxy-2-propanamine

Product 1

HCID 19420792N-trityl-1-[4-(benzoxazol-2-yl)benzyloxy]-3-(4-phenylbutoxy)-2-propanamine

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
20 °C

Procedure

N-trityl-1-[4-(benzoxazol-2-yl)benzyloxy]-3-hydroxy-2-propanamine (0.4 g; 0.74 mmol) is added to a suspension of potassium hydride (0.12 g; 1.1 mmol; 35% suspension in oil) in dry THF (4 ml) at 0° C. The reaction is stirred for 15 minutes at 20° C. 4-Phenyl-1-butyl iodide (0.21 g; 0.81 mmol) is added and the reaction mixture stirred for 15 hours. The reaction is quenched with MeOH, diluted with CH2Cl2 and washed with water 2×. The organic phase is dried (Na2SO4), concentrated and purified by column chromatography with 80% CH2Cl2 /20% petroleum ether to yield N-trityl-1-[4-(benzoxazol-2-yl)benzyloxy]-3-(4-phenylbutoxy)-2-propanamine as an oil which is used directly in Step F.

Workup

  1. stirringthe reaction mixture stirred for 15 hours
  2. customThe reaction is quenched with MeOH
  3. additiondiluted with CH2Cl2
  4. washwashed with water 2×
  5. dry with materialThe organic phase is dried (Na2SO4)
  6. concentrationconcentrated
  7. custompurified by column chromatography with 80% CH2Cl2 /20% petroleum ether

Sources & evidence

ORD record
ord-76e114dcb8fb40e395173913a5b9f9cf
Source dataset
uspto-grants-1996_10
Patent number
US05561143

Reaction notes

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