1,3-Propanediol → HCID 54004475, compound

HRID 442980Notes

Reaction equation

HRID 442980 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([S:8]([O:11][C:12]2[CH:13]=[C:14]([OH:19])[CH:15]=[C:16]([CH3:18])[CH:17]=2)(=[O:10])=[O:9])[CH:5]=[CH:6][CH:7]=1.[CH2:20](O)[CH2:21][CH2:22][OH:23].N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O.C(P(CCCC)CCCC)CCC>O1CCCC1.C(OCC)C.ClCCl>[Br:1][C:2]1[CH:3]=[C:4]([S:8]([O:11][C:12]2[CH:13]=[C:14]([CH:15]=[C:16]([CH3:18])[CH:17]=2)[O:19][CH2:20][CH2:21][CH2:22][OH:23])(=[O:9])=[O:10])[CH:5]=[CH:6][CH:7]=1

Participants

8

Reactant 4

HCID 104421,3-PropanediolHCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 54559609HCID 54559609, compound

Product 1

HCID 54004475HCID 54004475, compoundYield 96.1%

Reagents, catalysts & solvents 3

HCID 3283Diethyl EtherSolventHCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a cooled (0° C.) solution of 0.815 g (2.37 mmol) 3-(3-bromophenylsulfonyloxy)-5-methylphenol, as prepared in the preceding step, 0.51 mL (7.12 mmol) of 1,3-propanediol and 1.20 g (4.75 mmol) of 1,1'-(azodicarbonyl)dipiperidine in 15 mL of anhydrous tetrahydrofuran was added 1.18 mL (4.75 mmol) of tri-n-butylphosphine dropwise over 8 min. Dichloromethane (10 mL) was added to aid stirring. After stirring at ambient temperature for 5.5 h, the reaction mixture was diluted with 100 mL of diethyl ether. The resulting mixture was stirred for 30 min, filtered and the filtrate concentrated to give a pale yellow semisolid. This residue was flash chromatographed on 80 g of silica gel with 25-50% ethyl acetate-hexane to afford 0.914 g (96% yield) of the title compound as a colorless resin: 1H-NMR (300 MHz; CDCl3) δ 8.01 (t, 1H, J=1.8 Hz), 7.79 (m, 2H), 7.42 (t, 1H, J=8.0 Hz), 6.64 (s, 1H), 6.41 (s, 1H), 6.37 (t, 1H, J=2.2 Hz), 4.01 (t, 2H, J=6.0 Hz), 3.83 (t, 2H, J=5.6 Hz), 2.26 (s, 3H) and 2.00 (m, 2H).

Workup

  1. stirringAfter stirring at ambient temperature for 5.5 h
  2. stirringThe resulting mixture was stirred for 30 min
  3. filtrationfiltered
  4. concentrationthe filtrate concentrated
  5. customto give a pale yellow semisolid
  6. customchromatographed on 80 g of silica gel with 25-50% ethyl acetate-hexane

Sources & evidence

ORD record
ord-d8f4119580f24deaaac63b68a4258082
Source dataset
uspto-grants-1999_04
Patent number
US05891909

Reaction notes

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