Ethanol → HCID 178445709, compound

HRID 709848Notes

Reaction equation

HRID 709848 reaction equation
[C:1]([C@H:5]1[CH2:10][CH2:9][C@H:8]([O:11][C:12]2[CH:13]=[C:14]3[C:19](=[CH:20][CH:21]=2)[CH2:18][C@H:17]([C@@:22]2([CH3:28])[CH2:26][O:25]C(=O)[NH:23]2)[CH2:16][CH2:15]3)[CH2:7][CH2:6]1)([CH3:4])([CH3:3])[CH3:2].[OH-].[Li+].C(O)C.O>>[NH2:23][C@:22]([C@@H:17]1[CH2:16][CH2:15][C:14]2[C:19](=[CH:20][CH:21]=[C:12]([O:11][C@H:8]3[CH2:7][CH2:6][C@H:5]([C:1]([CH3:4])([CH3:3])[CH3:2])[CH2:10][CH2:9]3)[CH:13]=2)[CH2:18]1)([CH3:28])[CH2:26][OH:25]

Participants

5

Reactant 4

HCID 702EthanolHCID 962WaterHCID 3939Lithium HydroxideHCID 178445704HCID 178445704, compound

Product 1

HCID 178445709HCID 178445709, compoundYield 17%

Procedure

The mixture of (S)-4-((R)-6-(trans-4-tert-butylcyclohexyloxy)-1,2,3,4-tetrahydronaphthalen-2-yl)-4-methyloxazolidin-2-one (109.3 mg, 0.0002835 mol) (isomer 1) and lithium hydroxide (74.7 mg, 0.00312 mol) in ethanol (1.8 mL, 0.031 mol) and water (0.60 mL, 0.033 mol) was heated to reflux for overnight. LCMS showed starting material was consumed and peak Rf=1.66 min 360.39 ([M+1], 100%) left. The solvent was removed under vacuum and the residue was partitioned between water and dichloromethane. The aqueous layer was extensively extracted with dichloromethane. And the combined organic phase was dried over Na2SO4. The concentrated residue was taken up into dichloromethane and subjected to chromatography purification with dichloromethane/MeOH (10:90 to 80:20) to give the product (17.3 mg, 17% yield). LCMS 360.39 ([M+1], 100%). 1H NMR (400 MHz, CD3OD) δ ppm 0.89 (s, 9H), 1.07 (s, 3H), 1.09-1.54 (m, 6H), 1.79-1.87 (m, 3H), 2.04 (m, 1H), 2.15 (m, 2H), 2.53 (dd, J=15.5, 12.3 Hz, 1H), 2.72-2.86 (m, 3H), 3.46 (d, J=11.0 Hz, 1H), 3.55 (d, J=11.0 Hz, 1H), 4.07 (m, 1H), 6.59 (d, J=2.4 Hz, 1H), 6.63 (dd, J=8.3, 2.5 Hz, 1H), 6.94 (d, J=8.3 Hz, 1H).

Workup

  1. temperaturewas heated
  2. temperatureto reflux for overnight
  3. customwas consumed
  4. waitpeak Rf=1.66 min 360.39 ([M+1], 100%) left
  5. customThe solvent was removed under vacuum
  6. customthe residue was partitioned between water and dichloromethane
  7. extractionThe aqueous layer was extensively extracted with dichloromethane
  8. dry with materialAnd the combined organic phase was dried over Na2SO4
  9. customsubjected to chromatography purification with dichloromethane/MeOH (10:90 to 80:20)

Sources & evidence

ORD record
ord-b534e0ed9ba14e579d645398df64d223
Source dataset
uspto-grants-2015_11
Patent number
US09181191B2

Reaction notes

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