Triethylamine → 7-[1-(2,6-Dimethylpyridin-4-yl)-4-ethoxycarbonylpiperidin-4-ylmethoxy]-1,2,3,4-tetrahydroisoquinoline-2-carboxylic acid benzyl ester

HRID 412534Notes

Reaction equation

[CH2:1]([O:8][C:9]([N:11]1[CH2:20][CH2:19][C:18]2[C:13](=[CH:14][C:15]([O:21][CH2:22][C:23]3([C:29]([O:31][CH2:32][CH3:33])=[O:30])[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]3)=[CH:16][CH:17]=2)[CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.Cl[C:42]1[CH:47]=[C:46]([CH3:48])[N:45]=[C:44]([CH3:49])[CH:43]=1>C(O)C>[CH2:1]([O:8][C:9]([N:11]1[CH2:20][CH2:19][C:18]2[C:13](=[CH:14][C:15]([O:21][CH2:22][C:23]3([C:29]([O:31][CH2:32][CH3:33])=[O:30])[CH2:24][CH2:25][N:26]([C:42]4[CH:47]=[C:46]([CH3:48])[N:45]=[C:44]([CH3:49])[CH:43]=4)[CH2:27][CH2:28]3)=[CH:16][CH:17]=2)[CH2:12]1)=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

Conditions

Temperature: 150 °C

Procedure

To a solution of 7-(4-ethoxycarbonylpiperidin-4-ylmethoxy)-1,2,3,4-tetrahydroisoquinoline-2-carboxylic acid benzyl ester (140 mg) in ethanol (3 ml) were added triethylamine (0.05 ml) and 4-chloro-2,6-dimethylpyridine (Journal of Heterocyclic Chemistry, vol. 27, p. 1841 (1990)) (45 mg) and the mixture was stirred at 150° C. for 25 hours in a sealed tube. After completion of the reaction, the solvent was evaporated and the obtained residue was purified by silica gel column chromatography (chloroform:methanol=4:1) and dried under reduced pressure to give the title compound (160 mg).

Workup

customAfter completion of the reaction
customthe solvent was evaporated
customthe obtained residue was purified by silica gel column chromatography (chloroform:methanol=4:1)
customdried under reduced pressure

Sources & evidence

ORD record: ord-c211d77b3f2642bfb3e7d5503c8f0607
Source dataset: uspto-grants-2003_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06562828B1

Reaction notes

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