Water → Ammonia

HRID 637060Notes

Reaction equation

HRID 637060 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:37]=[C:38]([O:42][CH3:43])[C:39]=1[O:40][CH3:41])[C:6]([N:8]1[CH2:12][CH2:11][C:10]([CH2:19][CH2:20][N:21]2[CH2:27][CH2:26][CH2:25][N:24]([C:28]3[NH:32][C:31]4[CH:33]=[CH:34][CH:35]=[CH:36][C:30]=4[N:29]=3)[CH2:23][CH2:22]2)([C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[CH2:9]1)=[O:7].C([Li])(CC)C.S(O[CH2:54][CH2:55][S:56]([CH3:59])(=[O:58])=[O:57])(=O)(=O)C.O>O1CCCC1.CO.ClCCl>[NH3:8].[CH3:43][O:42][C:38]1[CH:37]=[C:5]([CH:4]=[C:3]([O:2][CH3:1])[C:39]=1[O:40][CH3:41])[C:6]([N:8]1[CH2:12][CH2:11][C:10]([CH2:19][CH2:20][N:21]2[CH2:27][CH2:26][CH2:25][N:24]([C:28]3[N:29]([CH2:54][CH2:55][S:56]([CH3:59])(=[O:58])=[O:57])[C:30]4[CH:36]=[CH:35][CH:34]=[CH:33][C:31]=4[N:32]=3)[CH2:23][CH2:22]2)([C:13]2[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=2)[CH2:9]1)=[O:7]

Participants

8

Reactant 4

HCID 962WaterHCID 184644781-(3,4,5-trimethoxybenzoyl)-3-(2-(4-(1H-benzimidazol-2-yl)[1,4]diazepan-1-yl)ethyl)-3-phenylpyrrolidineHCID 184645972-(Methylsulfonyl)ethyl methanesulfonate2×HCID 178418400CID 536281003×

Product 2

HCID 222AmmoniaYield 0.5%HCID 18464598HCID 18464598, compound

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×HCID 21226129Dichloromethane methanolSolvent

Conditions

Temperature
-78 °C

Procedure

Combine 1-(3,4,5-trimethoxybenzoyl)-3-(2-(4-(1H-benzimidazol-2-yl)[1,4]diazepan-1-yl)ethyl)-3-phenylpyrrolidine (prepared from (−)-3-phenyl-3-(2-hydroxyethyl)pyrrolidine(R,R)-di-p-anisoyltartaric acid salt) (0.05 g, 0.09 mmol) and tetrahydrofuran (5 mL). Cool to −78° C. using a dry-ice/acetone bath. Add dropwise a solution of sec-butyllithium (0.15 mL, 1.3 M, 0.19 mmol). When the addition of sec-butyllithium is complete, add a solution 2-methylsulfonylethyl mesylate (0.02 g, 0.10 mmol) in tetrahydrofuran (2 mL). Heat the reaction mixture to reflux. After 12 hours, cool, add sec-butyllithium (0.10 mL) and 2-methylsulfonylethyl mesylate (0.02 g, 0.10 mmol) and again heat the reaction mixture to reflux. After 12 hours, cool, add water, separate the layers and extract the aqueous layer twice with ethyl acetate. Combine the organic layers, dry over Na2SO4, filter, and evaporate in vacuo to give a residue. Chromatograph the residue on silica gel eluting with 0.5% concentrated aqueous ammonia solution/5% methanol/dichloromethane to give the title compound: Rf=0.38 (silica gel, 0.5% concentrated aqueous ammonia solution/5% methanol/dichloromethane).

Workup

  1. temperatureHeat the reaction mixture
  2. temperatureto reflux
  3. temperaturecool
  4. temperatureagain heat the reaction mixture
  5. temperatureto reflux
  6. waitAfter 12 hours
  7. temperaturecool
  8. customseparate the layers
  9. extractionextract the aqueous layer twice with ethyl acetate
  10. dry with materialdry over Na2SO4
  11. filtrationfilter
  12. customevaporate in vacuo
  13. customto give a residue

Sources & evidence

ORD record
ord-770c6c4bc6414f819512a1c4e43908fc
Source dataset
uspto-grants-2001_02
Patent number
US06194406B1

Reaction notes

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