Triphenylphosphine → HCID 24694511, compound

HRID 499671Notes

Reaction equation

HRID 499671 reaction equation
[Br:1]N1C(=O)CCC1=O.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[CH3:28][O:29][C:30]1[CH:31]=[C:32]([CH2:36][O:37][CH2:38][CH2:39]O)[CH:33]=[CH:34][CH:35]=1>C(Cl)Cl.[Al]>[Br:1][CH2:39][CH2:38][O:37][CH2:36][C:32]1[CH:33]=[CH:34][CH:35]=[C:30]([O:29][CH3:28])[CH:31]=1

Participants

6

Reactant 3

HCID 11776TriphenylphosphineHCID 67184N-bromobutanimideHCID 68461234HCID 68461234, compound

Product 1

HCID 24694511HCID 24694511, compoundYield 104.3%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolvent4×HCID 5359268AluminumSolvent

Procedure

A solution of N-bromosuccinimide (272 mg, 1.53 mmol) in DCM (2.5 mL) was added to resin-bound triphenylphosphine (510 mg, 1.53 mEquiv, Fluka) in DCM (2.5 mL), and the reaction was stirred at rt for 10 min. A solution of 2-({[3-(methyloxy)phenyl]methyl}oxy)ethanol (114 mg, 0.626 mmol) in DCM (1.5 mL) was added to the reaction, and the residual alcohol was transferred with additional DCM (1.5 mL). The reaction vial was capped, wrapped in aluminum foil, and stirred at rt for 20 h. The reaction was filtered through a SPE cartridge (5 g silica) eluting with the following 10 mL fractions: DCM (fraction 1), 30% EtOAc/hexanes (fraction 2), and 50% EtOAc/hexanes (fraction 3) to give the title compound (160 mg, title compound and impurity). The product was characterized by 1H NMR (400 MHz) in CDCl3. The purity of the compound was good enough to carry on the next reaction.

Workup

  1. customThe reaction vial was capped
  2. stirringstirred at rt for 20 h
  3. filtrationThe reaction was filtered through a SPE cartridge (5 g silica)
  4. washeluting with the following 10 mL fractions

Sources & evidence

ORD record
ord-4f58443fee564a51a30adabf9f236dc3
Source dataset
uspto-grants-2010_08
Patent number
US07767691B2

Reaction notes

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