1,2-Dichloroethane → N-(3,5-bis((tert-butyldimethylsilyloxy)methyl)phenyl)-N-(2-(2-(2-methoxyethoxy)ethoxy)ethyl)-4-methyl-4-(methyldisulfanyl)pentanamide

HRID 1968515Notes

Reaction equation

HRID 1968515 reaction equation
[Si:1]([O:8][CH2:9][C:10]1[CH:11]=[C:12]([CH:24]=[C:25]([CH2:27][O:28][Si:29]([C:32]([CH3:35])([CH3:34])[CH3:33])([CH3:31])[CH3:30])[CH:26]=1)[NH:13][CH2:14][CH2:15][O:16][CH2:17][CH2:18][O:19][CH2:20][CH2:21][O:22][CH3:23])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[CH3:36][C:37]([S:44][S:45][CH3:46])([CH3:43])[CH2:38][CH2:39][C:40](O)=[O:41].C(Cl)CCl>ClCCl.CN(C1C=CN=CC=1)C.O>[Si:1]([O:8][CH2:9][C:10]1[CH:11]=[C:12]([N:13]([CH2:14][CH2:15][O:16][CH2:17][CH2:18][O:19][CH2:20][CH2:21][O:22][CH3:23])[C:40](=[O:41])[CH2:39][CH2:38][C:37]([CH3:43])([S:44][S:45][CH3:46])[CH3:36])[CH:24]=[C:25]([CH2:27][O:28][Si:29]([C:32]([CH3:35])([CH3:34])[CH3:33])([CH3:30])[CH3:31])[CH:26]=1)([C:4]([CH3:5])([CH3:7])[CH3:6])([CH3:3])[CH3:2]

Participants

7

Reactant 3

HCID 111,2-DichloroethaneHCID 115646344-Methyl-4-(methyldisulfanyl)pentanoic acidHCID 594402243,5-bis((tert-butyldimethylsilyloxy)methyl)-N-(2-(2-(2-methoxyethoxy)ethoxy)ethyl)aniline

Product 1

HCID 59440082N-(3,5-bis((tert-butyldimethylsilyloxy)methyl)phenyl)-N-(2-(2-(2-methoxyethoxy)ethoxy)ethyl)-4-methyl-4-(methyldisulfanyl)pentanamideYield 48%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 962WaterSolventHCID 6344DichloromethaneSolvent2×

Procedure

To a mixture of 3,5-bis((tert-butyldimethylsilyloxy)methyl)-N-(2-(2-(2-methoxyethoxy)ethoxy)ethyl)aniline (267a) (525 mg, 0.995 mmol) and 4-methyl-4-(methyldisulfanyl)pentanoic acid (232 mg, 1.193 mmol) in anhydrous dichloromethane (9.0 mL) was added EDC (229 mg, 1.193 mmol) and DMAP (12.15 mg, 0.099 mmol). The reaction was stirred at room temperature for five hours. The mixture was diluted with dichloromethane and water. The organic layer was washed with brine, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. Purification by silica gel chromatography (30% Ethyl acetate/Hexanes) gave N-(3,5-bis((tert-butyldimethylsilyloxy)methyl)phenyl)-N-(2-(2-(2-methoxyethoxy)ethoxy)ethyl)-4-methyl-4-(methyldisulfanyl)pentanamide (267b) (335 mg, 48%).

Workup

  1. washThe organic layer was washed with brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customPurification by silica gel chromatography (30% Ethyl acetate/Hexanes)

Sources & evidence

ORD record
ord-a4d630b4c36e47578f9d6cd623668835
Source dataset
uspto-grants-2013_04
Patent number
US08426402B2

Reaction notes

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