1,3-Propanediol → HCID 53853402, compound

HRID 442974Notes

Reaction equation

HRID 442974 reaction equation
[F: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>C(OCC)C.O1CCCC1>[F: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

7

Reactant 4

HCID 104421,3-PropanediolHCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 54410095HCID 54410095, compound

Product 1

HCID 53853402HCID 53853402, compoundYield 78%

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

A solution of 3-(3-fluorophenylsulfonyloxy)-5-methylphenol (930 mg, 3.3 mmol, as prepared in the preceding step), 1,3-propanediol (0.75 mL, 10 mmol), 1,1'-(azodicarbonyl)dipiperidine (1.76 g, 7.0 mmol), and anhydrous tetrahydrofuran (20 mL) was cooled to 0° C. under nitrogen. Tri-n-butylphosphine (1.7 mL, 7.0 mmol) was added dropwise over 8.5 minutes. The mixture was stirred at 0° C. for 5 minutes then at ambient temperature for 5.5 hours. Diethyl ether (100 mL) was added, and the mixture was stirred for 15 minutes. The mixture was filtered, and the filtrate was concentrated. The residue was purified by flash column chromatography through silica gel (25% to 35% ethyl acetate in hexane) to give the title compound as a yellow oil (877 mg, 78%). 1H-NMR (300 MHz, CDCl3) δ 7.65-7.68 (m, 1H), 7.50-7.60 (m, 2H), 7.35-7.41 (m, 1H), 6.63 (br s, 1H), 6.41 (br s, 1H), 6.38 (br t, 1H, J=2.1 Hz), 4.01 (t, 2H, J=6.0 Hz), 3.82 (br t, 2H, J=6.0 Hz), 2.25 (s, 3H), 1.99 (pentet, 2H, J=6.0 Hz). Mass spectrum (MALDI-TOF, α-cyano-4-hydroxycinnamic acid matrix) calcd. for C16H17FO5S: 363.1 (M+Na), 379.0 (M+K). Found: 362.8, 378.9.

Workup

  1. waitat ambient temperature for 5.5 hours
  2. stirringthe mixture was stirred for 15 minutes
  3. filtrationThe mixture was filtered
  4. concentrationthe filtrate was concentrated
  5. customThe residue was purified by flash column chromatography through silica gel (25% to 35% ethyl acetate in hexane)

Sources & evidence

ORD record
ord-1743d4aab46145278dc97f246141fc32
Source dataset
uspto-grants-1999_04
Patent number
US05891909

Reaction notes

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