Tetrahydrofuran → (4R)-4-methyl-4-(6-(spiro[5.5]undecan-3-yloxy)naphthalen-2-yl)oxazolidin-2-one

HRID 2389101Notes

Reaction equation

HRID 2389101 reaction equation
[CH2:1]1[C:6]2([CH2:11][CH2:10][CH2:9][CH2:8][CH2:7]2)[CH2:5][CH2:4][CH:3]([OH:12])[CH2:2]1.O[C:14]1[CH:15]=[C:16]2[C:21](=[CH:22][CH:23]=1)[CH:20]=[C:19]([C@:24]1([CH3:30])[CH2:28][O:27][C:26](=[O:29])[NH:25]1)[CH:18]=[CH:17]2.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.O1CCCC1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>C(Cl)Cl>[CH3:30][C@@:24]1([C:19]2[CH:18]=[CH:17][C:16]3[C:21](=[CH:22][CH:23]=[C:14]([O:12][CH:3]4[CH2:2][CH2:1][C:6]5([CH2:7][CH2:8][CH2:9][CH2:10][CH2:11]5)[CH2:5][CH2:4]4)[CH:15]=3)[CH:20]=2)[CH2:28][O:27][C:26](=[O:29])[NH:25]1

Participants

7

Reactant 5

HCID 8028TetrahydrofuranHCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 51066623(R)-4-(6-hydroxynaphthalen-2-yl)-4-methyloxazolidin-2-oneHCID 66926515Spiro[5.5]undecan-3-ol

Product 1

HCID 67414094(4R)-4-methyl-4-(6-(spiro[5.5]undecan-3-yloxy)naphthalen-2-yl)oxazolidin-2-oneYield 100.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

The mixture of spiro[5.5]undecan-3-ol (166.0 mg, 0.0009866 mol), (R)-4-(6-hydroxynaphthalen-2-yl)-4-methyloxazolidin-2-one (200.0 mg, 0.0008222 mol), and triphenylphosphine (259 mg, 0.000987 mol) in tetrahydrofuran (7 mL, 0.08 mol) was heated to reflux, and diisopropyl azodicarboxylate (0.194 mL, 0.000987 mol) was added dropwise and was stirred and refluxed for overnight. The mixture was taken up into methylene chloride and subjected to chromatography purification with EtOAc/hexane (10:90 to 80:20) to give product (4R)-4-methyl-4-(6-(spiro[5.5]undecan-3-yloxy)naphthalen-2-yl)oxazolidin-2-one as a white solid (324 mg, 100%). LCMS Rf=2.34 min 394.45 ([M+1]+, 100%).

Workup

  1. temperaturewas heated
  2. temperatureto reflux
  3. temperaturerefluxed for overnight
  4. customsubjected to chromatography purification with EtOAc/hexane (10:90 to 80:20)

Sources & evidence

ORD record
ord-6ee500b3fae14700bb6cf4fc1d20e819
Source dataset
uspto-grants-2012_09
Patent number
US08269043B2

Reaction notes

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