4-Toluenesulfonyl chloride → HCID 57447048, compound
Reaction equation
[CH2:1]([O:3][CH2:4][C:5]1[N:6]([CH2:18][CH2:19][C:20]([NH2:22])=[O:21])[C:7]2[C:16]3[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=3[N:10]=[CH:9][C:8]=2[N:17]=1)[CH3:2].C1C=C(Cl)C=C(C(OO)=O)C=1.C1(C)C=CC(S(Cl)(=O)=O)=CC=1.[OH-].[Na+].C(=O)(O)[O-].[Na+].[OH-].[NH4+:53]>>[NH2:53][C:9]1[C:8]2[N:17]=[C:5]([CH2:4][O:3][CH2:1][CH3:2])[N:6]([CH2:18][CH2:19][C:20]([NH2:22])=[O:21])[C:7]=2[C:16]2[CH:15]=[CH:14][CH:13]=[CH:12][C:11]=2[N:10]=1Participants
Procedure
3-[2-(Ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl]propanamide (2.4 g, 8.1 mmol) was treated with mCPBA (3.24 g, 14.1 mmol) followed by ammonium hydroxide (40 mL) and p-toluenesulfonyl chloride (2.99 g, 15.7 mmol) according to a modification of the method described in Part D of Example 8. The reaction was not washed with 10% aqueous sodium hydroxide prior to the addition of ammonium hydroxide. After the amination reaction was stirred for two hours, 10% aqueous sodium hydroxide (25 mL) and saturated aqueous sodium bicarbonate (25 mL) were sequentially added with stirring. A precipitate formed and was isolated by filtration. The solid was triturated twice with 25% aqueous sodium hydroxide, isolated by filtration, washed with water, and dried in a vacuum oven for three days to provide 0.685 g of 3-[4-amino-2-(ethoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl]propanamide as tan needles, mp>250° C.
Workup
- washThe reaction was not washed with 10% aqueous sodium hydroxide
- additionto the addition of ammonium hydroxide
- customAfter the amination reaction
- stirringwith stirring
- customA precipitate formed
- customwas isolated by filtration
- customThe solid was triturated twice with 25% aqueous sodium hydroxide
- customisolated by filtration
- washwashed with water
- customdried in a vacuum oven for three days
Sources & evidence
- ORD record
- ord-f6a9a51822e64e67b693f4fac58da92d
- Source dataset
- uspto-grants-2014_04
- Patent number
- US08697873B2
Reaction notes
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