Triethylamine → 2-[1-methyl-2-[(methylsulfonyl)oxy]propyl]-1H-isoindole-1,3(2H)-dione

HRID 1271452Notes

Reaction equation

HRID 1271452 reaction equation
[CH3:1][S:2](Cl)(=[O:4])=[O:3].[OH:6][CH:7]([CH3:21])[CH:8]([N:10]1[C:18](=[O:19])[C:17]2[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=2)[C:11]1=[O:20])[CH3:9].C(N(CC)CC)C>CCOCC>[CH3:9][CH:8]([N:10]1[C:18](=[O:19])[C:17]2[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=2)[C:11]1=[O:20])[CH:7]([O:6][S:2]([CH3:1])(=[O:4])=[O:3])[CH3:21]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 600337Phthalimide, N-(2-hydroxy-3-butyl)-

Product 1

HCID 218952722-[1-methyl-2-[(methylsulfonyl)oxy]propyl]-1H-isoindole-1,3(2H)-dioneYield 82.7%

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent

Procedure

Methanesulfonyl chloride (9.7 mL, 56 mmol) was added to a solution of 10.5 g (48 mmol) of 2-(2-hydroxy-1-methylpropyl)-1H-isoindole-1,3(2H)-dione (JP 01242569 A2) and 8.1 mL (58 mmol) of triethylamine and the mixture was stirred at room temperature overnight. The mixture was diluted with ether and washed with water and brine. Drying (MgSO4) and removal of solvent gave an oil which slowly solidified. Trituration with hexanes gave 11.8 g of 2-[1-methyl-2-[(methylsulfonyl)oxy]propyl]-1H-isoindole-1,3(2H)-dione as a white solid, mp 67–73° C.

Workup

  1. washwashed with water and brine
  2. customDrying
  3. custom(MgSO4) and removal of solvent
  4. customgave an oil which

Sources & evidence

ORD record
ord-4208cee8194c4809b5c6ea89047ba01e
Source dataset
uspto-grants-2007_04
Patent number
US07205331B2

Reaction notes

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