Hydrochloric Acid → (R)-5-Amino-1,3-dihydrospiro[indene-2,3'-pyrrolo[2,3-b]pyridin]-2'(1'H)-one

HRID 1367148Notes

Reaction equation

HRID 1367148 reaction equation
[O:1]=[C:2]1[N:10](COCC[Si](C)(C)C)[C:5]2=[N:6][CH:7]=[CH:8][CH:9]=[C:4]2[C@:3]21[CH2:26][C:25]1[C:20](=[CH:21][CH:22]=[C:23]([NH:27]C(=O)OC(C)(C)C)[CH:24]=1)[CH2:19]2.Cl.C(N)CN.[OH-].[Na+]>CO.O>[NH2:27][C:23]1[CH:24]=[C:25]2[C:20](=[CH:21][CH:22]=1)[CH2:19][C@:3]1([C:4]3[C:5](=[N:6][CH:7]=[CH:8][CH:9]=3)[NH:10][C:2]1=[O:1])[CH2:26]2

Participants

7

Reactant 4

HCID 313Hydrochloric Acid2×HCID 3301EthylenediamineHCID 14798Sodium HydroxideHCID 73013404(R)-tert-butyl 2'-oxo-1'-((2-(trimethylsilyl)ethoxy)methyl)-1,1',2',3-tetrahydrospiro[indene-2,3'-pyrrolo[2,3-b]pyridine]-5-ylcarbaMate

Product 1

HCID 53260812(R)-5-Amino-1,3-dihydrospiro[indene-2,3'-pyrrolo[2,3-b]pyridin]-2'(1'H)-one

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

A solution of tert-butyl (R)-(2′-oxo-1′-{[2-(trimethylsilyl)ethoxy]methyl}-1,1′,2′,3-tetrahydrospiro[indene-2,3′-pyrrolo[2,3-b]pyridin]-5-yl)carbamate from, Step C (13.4 g, 27.8 mmol) in MeOH (300 mL) was saturated with HCl (g). The mixture was resaturated with HCl (g) every 30 min until the starting material was consumed, and then concentrated in vacuo. The residue was dissolved in MeOH (150 mL) and treated with ethylenediamine (1.9 mL, 27.8 mmol) and 10 N sodium hydroxide (6 mL, 60 mmol) to adjust the mixture to pH 10. After 30 min, the mixture was diluted with H2O (400 mL) and extracted with CHCl3 (1 L). The organic layer was dried over Na2SO4, filtered, and concentrated in vacuo. The crude material was triturated with MeOH (35 mL) to give the title compound. MS: m/z=252 (M+1).

Workup

  1. customwas consumed
  2. concentrationconcentrated in vacuo
  3. dissolutionThe residue was dissolved in MeOH (150 mL)
  4. extractionextracted with CHCl3 (1 L)
  5. dry with materialThe organic layer was dried over Na2SO4
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe crude material was triturated with MeOH (35 mL)

Sources & evidence

ORD record
ord-a54145a9f47f4319ad86bd8bc55169a2
Source dataset
uspto-grants-2011_02
Patent number
US07893079B2

Reaction notes

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