HCID 22668358, compound → HCID 22668284, compound

HRID 381772Notes

Reaction equation

HRID 381772 reaction equation
[Cl:1][C:2]1[C:11]([C:12]2[N:13]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[C:14]3[C:19]([CH:20]=2)=[CH:18][C:17]([CH2:21][OH:22])=[CH:16][CH:15]=3)=[CH:10][C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]=1>ClCCl.O=[Mn]=O>[Cl:1][C:2]1[C:11]([C:12]2[N:13]([C:23]([O:25][C:26]([CH3:29])([CH3:28])[CH3:27])=[O:24])[C:14]3[C:19]([CH:20]=2)=[CH:18][C:17]([CH:21]=[O:22])=[CH:16][CH:15]=3)=[CH:10][C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[N:3]=1

Participants

4

Reactant 1

HCID 22668358HCID 22668358, compound

Product 1

HCID 22668284HCID 22668284, compound

Reagents, catalysts & solvents 2

HCID 14801Manganese dioxideCatalyst2×HCID 6344DichloromethaneSolvent

Procedure

A mixture of tert-butyl 2-(2-chloro-3-quinolinyl)-5-(hydroxymethyl)-1H-indole-1-carboxylate (7-2, 800 mg, 1.96 mmol, 1 equiv) and MnO2 (850 mg, 9.8 mmol, 5.00 equiv) in dichloromethane (100 mL) was heated at reflux for 1.5 h. Additional MnO2 (700 mg, 8.05 mmol, 4.10 equiv) was added and heating was continued for 1 h. The catalyst was filtered and washed with dichloromethane (100 mL). The combined filtrate was concentrated to give tert-butyl 2-(2-chloro-3-quinolinyl)-5-formyl-1-H-indole-1-carboxylate (8-1) as a white foam. 1H NMR (500 MHz, CDCl3) δ10.11 (s, 1H), 8.47 (d, 1H, J=8.8 Hz), 8.22 (s, 1H), 8.16 (d, 1H, J=1.0 Hz), 8.09 (d, 1H, J=8.6 Hz), 7.95 (dd, 1H, J=8.8, 1.7 Hz), 7.89 (d, 1H, J=8.1 Hz), 7.81 (br t, 1H, J=7.6 Hz), 7.64 (br t, 1H, J=7.5 Hz), 6.80 (s, 1H ), 1.27 (s, 9H).

Workup

  1. temperaturewas heated
  2. temperatureat reflux for 1.5 h
  3. temperatureheating
  4. filtrationThe catalyst was filtered
  5. washwashed with dichloromethane (100 mL)
  6. concentrationThe combined filtrate was concentrated

Sources & evidence

ORD record
ord-384ad1364dba47ada74d42b87ad4dd2a
Source dataset
uspto-grants-2001_10
Patent number
US06306874B1

Reaction notes

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