3-(3,6-Dihydro-2H-pyran-4-yl)-5-nitro-1-trityl-1H-indazole → 3-(3,6-dihydro-2H-pyran-4-yl)-1-trityl-1H-indazol-5-ylamine

HRID 1038144Notes

Reaction equation

HRID 1038144 reaction equation
[O:1]1[CH2:6][CH:5]=[C:4]([C:7]2[C:15]3[C:10](=[CH:11][CH:12]=[C:13]([N+:16]([O-])=O)[CH:14]=3)[N:9]([C:19]([C:32]3[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=3)([C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)[C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)[N:8]=2)[CH2:3][CH2:2]1>CO.[Pd]>[O:1]1[CH2:2][CH:3]=[C:4]([C:7]2[C:15]3[C:10](=[CH:11][CH:12]=[C:13]([NH2:16])[CH:14]=3)[N:9]([C:19]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)([C:32]3[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=3)[C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)[N:8]=2)[CH2:5][CH2:6]1.[O:1]1[CH2:6][CH2:5][CH:4]([C:7]2[C:15]3[C:10](=[CH:11][CH:12]=[C:13]([NH2:16])[CH:14]=3)[N:9]([C:19]([C:20]3[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=3)([C:32]3[CH:33]=[CH:34][CH:35]=[CH:36][CH:37]=3)[C:26]3[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=3)[N:8]=2)[CH2:3][CH2:2]1

Participants

5

Reactant 1

HCID 674194943-(3,6-Dihydro-2H-pyran-4-yl)-5-nitro-1-trityl-1H-indazole

Product 2

HCID 674191893-(3,6-dihydro-2H-pyran-4-yl)-1-trityl-1H-indazol-5-ylamineHCID 674211453-(tetrahydro-pyran-4-yl)-1-trityl-1H-indazol-5-ylamine

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Procedure

To a solution of 3-(3,6-Dihydro-2H-pyran-4-yl)-5-nitro-1-trityl-1H-indazole (100 mg, 0.2 mmol) in methanol was added and Pd/C (10%, 20 mg). The reaction mixture was evacuated under vacuum and hydrogen gas was filled. After repeated three times the reaction was kept under hydrogen atmosphere overnight at room temperature. LCMS showed the starting material was consumed completely and both 3-(3,6-dihydro-2H-pyran-4-yl)-1-trityl-1H-indazol-5-ylamine and 3-(tetrahydro-pyran-4-yl)-1-trityl-1H-indazol-5-ylamine were obtained. The two products were separated using prep-HPLC to give both product in 60% and 40% yield respectively.

Workup

  1. customThe reaction mixture was evacuated under vacuum and hydrogen gas
  2. additionwas filled
  3. customwas consumed completely

Sources & evidence

ORD record
ord-1c320df2efc84e8882543e64612b688b
Source dataset
uspto-grants-2013_10
Patent number
US08546404B2

Reaction notes

Loading…