Triethylamine → HCID 59440136, compound

HRID 2405734Notes

Reaction equation

HRID 2405734 reaction equation
[OH:1][CH2:2][CH2:3][O:4][CH2:5][CH2:6][O:7][CH2:8][CH2:9][O:10][CH2:11][CH2:12][O:13][CH2:14][CH2:15][O:16][CH2:17][CH2:18][O:19][CH2:20][CH2:21][O:22][CH2:23][CH2:24][O:25][CH2:26][CH2:27][O:28][CH2:29][CH2:30][O:31][CH2:32][CH2:33][O:34][CH2:35][CH2:36][O:37][CH2:38][CH2:39][C:40]([O:42][CH3:43])=[O:41].[CH2:44](N(CC)CC)C.[C:51]1(C)[C:52]([S:57](Cl)(=[O:59])=[O:58])=[CH:53][CH:54]=[CH:55][CH:56]=1>ClCCl.CN(C1C=CN=CC=1)C>[S:57]([O:1][CH2:2][CH2:3][O:4][CH2:5][CH2:6][O:7][CH2:8][CH2:9][O:10][CH2:11][CH2:12][O:13][CH2:14][CH2:15][O:16][CH2:17][CH2:18][O:19][CH2:20][CH2:21][O:22][CH2:23][CH2:24][O:25][CH2:26][CH2:27][O:28][CH2:29][CH2:30][O:31][CH2:32][CH2:33][O:34][CH2:35][CH2:36][O:37][CH2:38][CH2:39][C:40]([O:42][CH3:43])=[O:41])([C:52]1[CH:51]=[CH:56][C:55]([CH3:44])=[CH:54][CH:53]=1)(=[O:58])=[O:59]

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 8623o-Toluenesulfonyl chlorideHCID 59440226Methyl propionate-PEG12

Product 1

HCID 59440136HCID 59440136, compoundYield 67%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

To a stirred solution of methyl 1-hydroxy-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate (265a)(1.2 g, 1.897 mmol) in dichloromethane (9.48 mL) at 0° C. was added triethylamine (0.529 mL, 3.79 mmol), toluene sulfonylchloride (0.542 g, 2.84 mmol) and DMAP (0.023 g, 0.190 mmol). The mixture was stirred for one hour at 0° C. and then three hours at ambient temperature, after which it was quenched with water and extracted twice with dichloromethane. The organic extracts were washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. Purification by silica gel chromatography (5% MeOH/CH2Cl2) gave methyl 1-(tosyloxy)-3,6,9,12,15,18,21,24,27,30,33,36-dodecaoxanonatriacontan-39-oate (265b)(1.0 g, 67%) as a light yellow oil. 1H NMR (400 Hz, CDCl3): δ 7.80 (d, J=8.4 Hz, 2H), 7.35 (d, J=8.0 Hz, 2H), 4.16 (t, J=4.8 Hz, 2H), 3.75 (t, J=6.4 Hz, 2H), 3.69 (s, 3H), 3.64 (m, 46H), 2.60 (t, J=6.4 Hz, 2H), 2.45 (s, 3H).

Workup

  1. customthree hours at ambient temperature, after which it was quenched with water
  2. extractionextracted twice with dichloromethane
  3. washThe organic extracts were washed with brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customPurification by silica gel chromatography (5% MeOH/CH2Cl2)

Sources & evidence

ORD record
ord-5815de0827c944ffb02081dfe9b13295
Source dataset
uspto-grants-2014_08
Patent number
US08809320B2

Reaction notes

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