2-Methylbenzoic acid → 6-(2-Methoxy-4-methoxymethoxyphenyl)-5-(4-methylbenzoyloxymethyl)-2,2,4-trimethyl-1,2-dihydroquinoline

HRID 1678274Notes

Reaction equation

HRID 1678274 reaction equation
[OH:1][CH2:2][C:3]1[C:12]([C:13]2[CH:18]=[CH:17][C:16]([O:19][CH2:20][O:21][CH3:22])=[CH:15][C:14]=2[O:23][CH3:24])=[CH:11][CH:10]=[C:9]2[C:4]=1[C:5]([CH3:27])=[CH:6][C:7]([CH3:26])([CH3:25])[NH:8]2.C[C:29]1[CH:37]=[CH:36][CH:35]=[CH:34][C:30]=1[C:31]([OH:33])=O.[CH2:38](P(CCCC)CCCC)CCC.N(C(N1CCCCC1)=O)=NC(N1CCCCC1)=O>C1C=CC=CC=1.CCCCCC>[CH3:24][O:23][C:14]1[CH:15]=[C:16]([O:19][CH2:20][O:21][CH3:22])[CH:17]=[CH:18][C:13]=1[C:12]1[C:3]([CH2:2][O:1][C:31](=[O:33])[C:30]2[CH:29]=[CH:37][C:36]([CH3:38])=[CH:35][CH:34]=2)=[C:4]2[C:9](=[CH:10][CH:11]=1)[NH:8][C:7]([CH3:26])([CH3:25])[CH:6]=[C:5]2[CH3:27]

Participants

7

Reactant 4

HCID 83732-Methylbenzoic acidHCID 13831TributylphosphineHCID 730421,1'-(Azodicarbonyl)dipiperidineHCID 579905855-Hydroxymethyl-6-(2-methoxy-4-methoxymethoxyphenyl)-2,2,4-trimethyl-1,2-dihydroquinoline

Product 1

HCID 579905836-(2-Methoxy-4-methoxymethoxyphenyl)-5-(4-methylbenzoyloxymethyl)-2,2,4-trimethyl-1,2-dihydroquinolineYield 73.2%

Reagents, catalysts & solvents 2

HCID 241BenzeneSolventHCID 8058HexaneSolvent

Procedure

5-Hydroxymethyl-6-(2-methoxy-4-methoxymethoxyphenyl)-2,2,4-trimethyl-1,2-dihydroquinoline (Reference Compound No. 1, 1.00 g, 2.71 mmol), 2-methylbenzoic acid (739 mg, 5.43 mmol), tri-n-butylphosphine (1.35 mL, 5.40 mmol), and 1,1′-(azodicarbonyl)dipiperidine (1.37 g, 5.43 mmol) were dissolved in anhydrous benzene (30 mL), and then the mixture was stirred under argon atmosphere at room temperature overnight. Hexane (30 mL) was added to the reaction mixture, and then the unsoluble materials were filtered out. The filtrate was concentrated under reduced pressure, and then the residue was purified by silica gel column chromatography (hexane-ethyl acetate) to give the titled reference compound (967 mg) as a colorless amorphous product. (Yield 73%)

Workup

  1. filtrationthe unsoluble materials were filtered out
  2. concentrationThe filtrate was concentrated under reduced pressure
  3. customthe residue was purified by silica gel column chromatography (hexane-ethyl acetate)

Sources & evidence

ORD record
ord-7827428e6f874ed3ac2c5873f64d45d1
Source dataset
uspto-grants-2011_08
Patent number
US08008497B2

Reaction notes

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