Diethyl Ether → HCID 21834562, compound

HRID 725776Notes

Reaction equation

HRID 725776 reaction equation
[CH2:1]([O:19][CH:20]([CH2:23][O:24][C:25]([C:38]1[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=1)([C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1)[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[CH2:21][OH:22])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18].[C:44]1([CH3:54])[CH:49]=[CH:48][C:47]([S:50](Cl)(=[O:52])=[O:51])=[CH:46][CH:45]=1.C(OCC)C>O>[C:44]1([CH3:54])[CH:49]=[CH:48][C:47]([S:50]([O:22][CH2:21][CH:20]([CH2:23][O:24][C:25]([C:38]2[CH:39]=[CH:40][CH:41]=[CH:42][CH:43]=2)([C:32]2[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=2)[C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[O:19][CH2:1][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18])(=[O:52])=[O:51])=[CH:46][CH:45]=1

Participants

5

Reactant 3

HCID 3283Diethyl EtherHCID 73974-Toluenesulfonyl chlorideHCID 21724378HCID 21724378, compound

Product 1

HCID 21834562HCID 21834562, compoundYield 85%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

A solution of 2-O-Octadecyl-3-O-trityl-glycerol (10 g, 17.04 mmol) in 52 ml water-free pyridine is added dropwise during 30 min. to a solution of p-toluenesulfonyl chloride (5.1 g, 26.75 mmol) in 39 ml water-free pyridine under stirring. After 2 days at room temperature 162 ml diethyl ether are added and the precipitate formed is removed by filtration. The organic phase is washed successively with water (6×50 ml), 0.5N HCl (2×29 ml), 0.5N sodium carbonate (2×29 ml), and water (4×50 ml). Evaporation of the solvent under vacuum gives an oily product which becomes solid after drying in vacuo. The product, 1-p-toluenesulfonyl-2-O-Octadecyl-3-O-trityl-glycerol (10.5 g, 85% yield), is used for the next step without further purification.

Workup

  1. customthe precipitate formed
  2. customis removed by filtration
  3. washThe organic phase is washed successively with water (6×50 ml), 0.5N HCl (2×29 ml), 0.5N sodium carbonate (2×29 ml), and water (4×50 ml)
  4. customEvaporation of the solvent under vacuum
  5. customgives an oily product which
  6. customafter drying in vacuo

Sources & evidence

ORD record
ord-541547abc28941039f11293829c6390e
Source dataset
uspto-grants-1998_01
Patent number
US05707978

Reaction notes

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