Sodium Bicarbonate → 2-(5-{1-[3-chloro-4-(methylsulfonyl)phenyl]-2-[(2R,3R,7R)-2,3-diphenyl-1,4-dioxaspiro[4.4]non-7-yl]ethyl}-1H-pyrrol-2-yl)pyridine

HRID 1882076Notes

Reaction equation

HRID 1882076 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([CH:12]([CH2:25][C@H:26]2[CH2:46][CH2:45][C:28]3([O:32][C@H:31]([C:33]4[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=4)[C@@H:30]([C:39]4[CH:44]=[CH:43][CH:42]=[CH:41][CH:40]=4)[O:29]3)[CH2:27]2)[C:13](=O)[CH2:14][CH2:15][C:16]([C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][N:19]=2)=O)[CH:5]=[CH:6][C:7]=1[S:8]([CH3:11])(=[O:10])=[O:9].C([O-])(=O)C.[NH4+:51].C(=O)([O-])O.[Na+]>C(O)(=O)C.C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[C:4]([CH:12]([C:13]2[NH:51][C:16]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][N:19]=3)=[CH:15][CH:14]=2)[CH2:25][C@H:26]2[CH2:46][CH2:45][C:28]3([O:29][C@H:30]([C:39]4[CH:40]=[CH:41][CH:42]=[CH:43][CH:44]=4)[C@@H:31]([C:33]4[CH:34]=[CH:35][CH:36]=[CH:37][CH:38]=4)[O:32]3)[CH2:27]2)[CH:5]=[CH:6][C:7]=1[S:8]([CH3:11])(=[O:10])=[O:9]

Participants

6

Reactant 3

HCID 516892Sodium BicarbonateHCID 517165Ammonium AcetateHCID 593314665-[3-chloro-4-(methylsulfonyl)phenyl]-6-[(2R,3R,7R)-2,3-diphenyl-1,4-dioxaspiro[4.4]non-7-yl]-1-(pyridin-2-yl)hexane-1,4-dione

Product 1

HCID 593312402-(5-{1-[3-chloro-4-(methylsulfonyl)phenyl]-2-[(2R,3R,7R)-2,3-diphenyl-1,4-dioxaspiro[4.4]non-7-yl]ethyl}-1H-pyrrol-2-yl)pyridineYield 85.6%

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
110 °C

Procedure

To a solution of 5-[3-chloro-4-(methylsulfonyl)phenyl]-6-[(2R,3R,7R)-2,3-diphenyl-1,4-dioxaspiro[4.4]non-7-yl]-1-(pyridin-2-yl)hexane-1,4-dione (698 mg) in acetic acid (5 mL) was added ammonium acetate (1.31 g), and the mixture was stirred at 110° C. for 1 hr. After cooling to room temperature, the mixture was neutralized with saturated aqueous sodium hydrogen carbonate solution. The reaction mixture was diluted with ethyl acetate and washed with water. The ethyl acetate layer was dried (MgSO4) and concentrated. The residue was subjected to silica gel column chromatography, and the title compound (580 mg, yield 85%) was obtained as a pale-yellow amorphous solid from a fraction eluted with ethyl acetate-hexane (1:1, volume ratio).

Workup

  1. temperatureAfter cooling to room temperature
  2. washwashed with water
  3. dry with materialThe ethyl acetate layer was dried (MgSO4)
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-b4b39fd89f294fa89dfcf0660f3e5610
Source dataset
uspto-grants-2012_11
Patent number
US08318746B2

Reaction notes

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