Phenyl Isothiocyanate → Phenylthiocarbamic acid O-(4-hydroxymethyl-5-oxo-2,3,4,5-tetrahydro-benzo[b]oxepin-4-ylmethyl) ester

HRID 2265824Notes

Reaction equation

HRID 2265824 reaction equation
[OH:1][CH2:2][C:3]1([CH2:15][OH:16])[CH2:9][CH2:8][O:7][C:6]2[CH:10]=[CH:11][CH:12]=[CH:13][C:5]=2[C:4]1=[O:14].C(N(CC)CC)C.[C:24]1([N:30]=[C:31]=[S:32])[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1>O1CCCC1>[OH:16][CH2:15][C:3]1([CH2:2][O:1][C:31](=[S:32])[NH:30][C:24]2[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH2:9][CH2:8][O:7][C:6]2[CH:10]=[CH:11][CH:12]=[CH:13][C:5]=2[C:4]1=[O:14]

Participants

5

Reactant 3

HCID 7673Phenyl IsothiocyanateHCID 8471TriethylamineHCID 670731254,4-Bis(hydroxymethyl)-3,4-dihydro-2H-benzo[b]oxepin-5-one

Product 1

HCID 86633681Phenylthiocarbamic acid O-(4-hydroxymethyl-5-oxo-2,3,4,5-tetrahydro-benzo[b]oxepin-4-ylmethyl) ester

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 4,4-bis(hydroxymethyl)-3,4-dihydro-2H-benzo[b]oxepin-5-one (500 mg, 2.25 mmol) in 28 ml of tetrahydrofuran were added, at room temperature, triethylamine (0.34 ml, 2.5 mmol) and phenyl isothiocyanate (672 μl, 5.63 mmol). The mixture was heated to reflux for 72 hours, concentrated and purified by column chromatography on silica gel (eluent: 1:1 tert-butyl methyl ether/cyclohexane). The product was obtained in a yield of 149 mg (19%).

Workup

  1. temperatureThe mixture was heated
  2. temperatureto reflux for 72 hours
  3. concentrationconcentrated
  4. custompurified by column chromatography on silica gel (eluent: 1:1 tert-butyl methyl ether/cyclohexane)
  5. customThe product was obtained in a yield of 149 mg (19%)

Sources & evidence

ORD record
ord-8aa5679a085849e1927ce31a861e643f
Source dataset
uspto-grants-2010_12
Patent number
US07858613B2

Reaction notes

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