p-Toluenesulfonic acid → 2-Tetrahydropyranyl 4-(8-cyclohexyloctylamino)benzoate

HRID 905274Notes

Reaction equation

HRID 905274 reaction equation
[CH:1]1([CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][NH:15][C:16]2[CH:24]=[CH:23][C:19]([C:20]([OH:22])=[O:21])=[CH:18][CH:17]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[O:25]1[CH:30]=[CH:29][CH2:28][CH2:27][CH2:26]1.C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[CH:1]1([CH2:7][CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][NH:15][C:16]2[CH:24]=[CH:23][C:19]([C:20]([O:22][CH:26]3[CH2:27][CH2:28][CH2:29][CH2:30][O:25]3)=[O:21])=[CH:18][CH:17]=2)[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

5

Reactant 3

HCID 6101p-Toluenesulfonic acidHCID 80803,4-dihydro-2H-pyranHCID 204757724-(8-Cyclohexyloctylamino)benzoic acid

Product 1

HCID 204758342-Tetrahydropyranyl 4-(8-cyclohexyloctylamino)benzoate

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

A mixture of 7 g. 4-(8-cyclohexyloctylamino)benzoic acid, 2 g. 2,3-dihydropyran and 100 mg. anhydrous p-toluenesulfonic acid in 50 ml. toluene is stirred at room temperature for 20 hours. The solution is washed with saturated sodium bicarbonate, dried, and condensed. The residue is crystallized from methylcyclohexane to white crystals.

Workup

  1. additionA mixture of 7 g
  2. washThe solution is washed with saturated sodium bicarbonate
  3. customdried
  4. customcondensed
  5. customThe residue is crystallized from methylcyclohexane to white crystals

Sources & evidence

ORD record
ord-82e37ac1a3fc4c2c9dac6c33089a34dd
Source dataset
uspto-grants-1983_12
Patent number
US04423051

Reaction notes

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