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Ethyl Acetate → 1h-Indazole-6-methanamine,1-(tetrahydro-2h-pyran-2-yl)-

HRID 1634074
Notes
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Reaction equation

HRID 1634074 reaction equation
[H-].[H-].[H-].[H-].[Li+].[Al+3].[N:7]([CH2:10][C:11]1[CH:19]=[C:18]2[C:14]([CH:15]=[N:16][N:17]2[CH:20]2[CH2:25][CH2:24][CH2:23][CH2:22][O:21]2)=[CH:13][CH:12]=1)=[N+]=[N-].[OH-].[Na+].C(OCC)(=O)C>C1COCC1>[NH2:7][CH2:10][C:11]1[CH:19]=[C:18]2[C:14]([CH:15]=[N:16][N:17]2[CH:20]2[CH2:25][CH2:24][CH2:23][CH2:22][O:21]2)=[CH:13][CH:12]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 8857Ethyl AcetateHCID 14798Sodium HydroxideHCID 186161896-(Azidomethyl)-1-(2-tetrahydropyranyl)indazoleHCID 21226445Aluminium lithium hydride

Product 1

HCID 186162001h-Indazole-6-methanamine,1-(tetrahydro-2h-pyran-2-yl)-

Reagents, catalysts & solvents 1

HCID 8028
Tetrahydrofuran
Solvent
2×

Conditions

Temperature
0 °C

Procedure

A solution of LiAlH4 (9 mL, 9 mmol, 1.0 M) in THF was added dropwise to a yellow solution of 6-(azidomethyl)-1-(2-tetrahydropyranyl)indazole (2.4 g, 9 mmol) (8) in THF (30 mL) at 0° C. After stirring at 0° C. for 1 hour, NaOH (1.0 m, 1.5 mL) was added. The reaction mixture was allowed to warm to room temperature. Ethyl acetate (100 mL) was added, and the suspension was filtered through (Celite). The filter cake was washed with an addition portion of ethyl acetate (40 mL). Combined organic layers were evaporated under vacuum to five essentially pure amine (2.1 g, 97%). MS (electrospray) 232.5 (M+1); 1H NMR (CDCl3) δ 1.67 (m, 3H), 2.01 (m, 2H), 2.48 (m, 1H), 3.85 (m, 1H), 3.94 (m, 1H), 5.75 (d, 1H, J=9.4 Hz), 7.14 (d, 1H, J=8.4 Hz), 7.62 (s, 1H), 7.62 (d, 1H, J=8.4 Hz), 7.93 (s, 1H)

Workup

  1. temperatureto warm to room temperature
  2. filtrationthe suspension was filtered through (Celite)
  3. washThe filter cake was washed with an addition portion of ethyl acetate (40 mL)
  4. customCombined organic layers were evaporated under vacuum to five essentially pure amine (2.1 g, 97%)

Sources & evidence

ORD record
ord-09e8816e570e4c848baa345c11c6d947
Source dataset
uspto-grants-2003_01
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US06506754B1

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes