(-)-Epichlorohydrin → HCID 86639883, compound

HRID 2040820Notes

Reaction equation

HRID 2040820 reaction equation
[CH2:1]([C:3]1[CH:8]=[C:7]([C:9]2[N:13]=[C:12]([C:14]3[CH:19]=[C:18]([CH3:20])[N:17]=[C:16]([CH2:21][CH3:22])[CH:15]=3)[O:11][N:10]=2)[CH:6]=[C:5]([CH3:23])[C:4]=1[OH:24])[CH3:2].[CH2:25]([C@@H:27]1[O:29][CH2:28]1)Cl>[OH-].[Na+].C(O)(C)C.CC(=O)OCC>[CH2:21]([C:16]1[CH:15]=[C:14]([C:12]2[O:11][N:10]=[C:9]([C:7]3[CH:6]=[C:5]([CH3:23])[C:4]([O:24][CH2:25][C@@H:27]4[CH2:28][O:29]4)=[C:3]([CH2:1][CH3:2])[CH:8]=3)[N:13]=2)[CH:19]=[C:18]([CH3:20])[N:17]=1)[CH3:22]

Participants

6

Reactant 2

HCID 2734062(-)-Epichlorohydrin2×HCID 136360510HCID 136360510, compound

Product 1

HCID 86639883HCID 86639883, compound

Reagents, catalysts & solvents 3

HCID 3776IsopropanolSolventHCID 8857Ethyl AcetateSolventHCID 14798Sodium HydroxideSolvent

Procedure

To a solution of 2-ethyl-4-[5-(2-ethyl-6-methyl-pyridin-4-yl)-[1,2,4]oxadiazol-3-yl]-6-methyl-phenol (89 mg, 0.276 mmol) in 3 N aq. NaOH (1 mL) and isopropanol (4 mL), (R)-epichlorohydrine (142 mg, 1.53 mmol) is added. The mixture is stirred at rt for 24 h before another portion of (R)-epichlorohydrine (142 mg; 1.53 mmol) is added. Stirring is continued for another 24 h at rt. The mixture is diluted with EA (50 mL) and washed with 1M aq. NaOH (10 mL) and brine (10 mL). The org. phase is dried over MgSO4, filtered and evaporated to give crude (S)-2-ethyl-4-[3-(3-ethyl-5-methyl-4-oxiranylmethoxy-phenyl)-[1,2,4]oxadiazol-5-yl]-6-methyl-pyridine; LC-MS*: tR=1.11* min; [M+1]+=380.24.

Workup

  1. additionis added
  2. washwashed with 1M aq. NaOH (10 mL) and brine (10 mL)
  3. dry with materialphase is dried over MgSO4
  4. filtrationfiltered
  5. customevaporated

Sources & evidence

ORD record
ord-3e73b150dd32421ba60a6ce9b18dc3f8
Source dataset
uspto-grants-2013_11
Patent number
US08580824B2

Reaction notes

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