Isopropanol → N-(3-{(2-({6-[(5R)-5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-oxo-1,3-oxazolidin-3-yl]hexyl}oxy)-ethoxy]methyl}phenyl)-N'-phenylurea

HRID 218998Notes

Reaction equation

HRID 218998 reaction equation
[NH2:1][C:2]1[CH:3]=[C:4]([CH:34]=[CH:35][CH:36]=1)[CH2:5][O:6][CH2:7][CH2:8][O:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][N:16]1[CH2:20][C@@H:19]([C:21]2[CH:32]=[CH:31][C:24]3[O:25][C:26]([CH3:30])([CH3:29])[O:27][CH2:28][C:23]=3[CH:22]=2)[O:18][C:17]1=[O:33].[C:37]1([N:43]=[C:44]=[O:45])[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=1.C(O)(C)C>ClCCl>[CH3:29][C:26]1([CH3:30])[O:25][C:24]2[CH:31]=[CH:32][C:21]([C@H:19]3[O:18][C:17](=[O:33])[N:16]([CH2:15][CH2:14][CH2:13][CH2:12][CH2:11][CH2:10][O:9][CH2:8][CH2:7][O:6][CH2:5][C:4]4[CH:3]=[C:2]([NH:1][C:44]([NH:43][C:37]5[CH:42]=[CH:41][CH:40]=[CH:39][CH:38]=5)=[O:45])[CH:36]=[CH:35][CH:34]=4)[CH2:20]3)=[CH:22][C:23]=2[CH2:28][O:27]1

Participants

5

Reactant 3

HCID 3776IsopropanolHCID 7672Phenyl isocyanateHCID 46833388(5R)-3-{6-[2-{[(3-aminophenyl)methyl]oxy}ethoxy]hexyl}-5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-1,3-oxazolidin-2-one

Product 1

HCID 66845296N-(3-{(2-({6-[(5R)-5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-2-oxo-1,3-oxazolidin-3-yl]hexyl}oxy)-ethoxy]methyl}phenyl)-N'-phenylureaYield 87.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
20 °C

Procedure

A solution of (5R)-3-(6-{2-[(3-aminobenzyl)oxy]ethoxy}hexyl)-5-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)-1,3-oxazolidin-2-one (0.057 g) in dichloromethane (2 ml) was treated with phenyl isocyanate (0.020 g) and the mixture stirred under nitrogen at 20° C. for 2 h. Isopropanol (5 ml) was added to quench excess isocyanate, and the mixture stirred for 30 min before leaving to stand for 15 h. The solvents were removed in vacuo to give a residue which was purified by SPE. Elution with a stepped gradient of eluants from cyclohexane to cyclohexane-EtOAc (9:1) and onwards to EtOAc followed by solvent evaporation in vacuo gave the title compound (0.062 g). LCMS RT=3.70 min, ES+ve 618 (MH)+.

Workup

  1. customto quench excess isocyanate
  2. stirringthe mixture stirred for 30 min
  3. custombefore leaving
  4. waitto stand for 15 h
  5. customThe solvents were removed in vacuo
  6. customto give a residue which
  7. customwas purified by SPE
  8. washElution with a stepped gradient of eluants from cyclohexane to cyclohexane-EtOAc (9:1) and onwards to EtOAc
  9. customfollowed by solvent evaporation in vacuo

Sources & evidence

ORD record
ord-39782f55f4b148fdb8a03afa96da802d
Source dataset
uspto-grants-2012_06
Patent number
US08198483B2

Reaction notes

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