Boron trifluoride etherate → 1-[[4-(4-Fluorophenoxy)benzenesulfonyl]-(3-hydroxypropyl)amino]cyclopentanecarboxylic acid benzyl ester

HRID 323799

Reaction equation

HRID 323799 reaction equation
[CH2:1]([O:8][C:9]([C:11]1([N:16]([CH2:34][CH2:35][CH2:36][O:37][Si](C(C)(C)C)(C)C)[S:17]([C:20]2[CH:25]=[CH:24][C:23]([O:26][C:27]3[CH:32]=[CH:31][C:30]([F:33])=[CH:29][CH:28]=3)=[CH:22][CH:21]=2)(=[O:19])=[O:18])[CH2:15][CH2:14][CH2:13][CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.B(F)(F)F.CCOCC>C(Cl)Cl>[CH2:1]([O:8][C:9]([C:11]1([N:16]([S:17]([C:20]2[CH:21]=[CH:22][C:23]([O:26][C:27]3[CH:32]=[CH:31][C:30]([F:33])=[CH:29][CH:28]=3)=[CH:24][CH:25]=2)(=[O:19])=[O:18])[CH2:34][CH2:35][CH2:36][OH:37])[CH2:12][CH2:13][CH2:14][CH2:15]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

4

Reactant 2

HCID 8000Boron trifluoride etherateHCID 155242791-{[3-(Tert-butyl-dimethylsilanyloxy)-propyl]-[4-(4-fluorophenoxy)benzenesulfonyl]-amino}cyclopentanecarboxylic acid benzyl ester

Product 1

HCID 155242801-[[4-(4-Fluorophenoxy)benzenesulfonyl]-(3-hydroxypropyl)amino]cyclopentanecarboxylic acid benzyl esterYield 102.5%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of the crude 1{[3-(tert-butyl-dimethylsilanyloxy)-propyl]-[4-(4-fluorophenoxy)benzenesulfonyl]-amino}cyclopentanecarboxylic acid benzyl ester (279 grams) in methylene chloride (1 L) at room temperature was added boron trifluoride etherate (103 mL, 0.84 mole). After 1 hour, the reaction was quenched by sequential addition of saturated ammonium chloride solution and water. The organic phase was separated, washed with water and brine and dried over magnesium sulfate. Evaporation of the solvent under vacuum provided crude 1-[[4-(4-fluorophenoxy)benzenesulfonyl]-(3-hydroxypropyl)amino]cyclopentanecarboxylic acid benzyl ester as an amber oil (235 grams).

Workup

  1. customthe reaction was quenched by sequential addition of saturated ammonium chloride solution and water
  2. customThe organic phase was separated
  3. washwashed with water and brine
  4. dry with materialdried over magnesium sulfate
  5. customEvaporation of the solvent under vacuum

Sources & evidence

ORD record
ord-47ce682108204cd8b185cbdc6befe9e0
Source dataset
uspto-grants-2001_04
Patent number
US06214872B1

Linked notes

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