1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol → N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-((5,6,7,8-tetrahydronaphthalen-1-yl)oxy)acetamide

HRID 1429486Notes

Reaction equation

[C:1]1([O:11][CH2:12][C:13]([O:15]CC)=O)[C:10]2[CH2:9][CH2:8][CH2:7][CH2:6][C:5]=2[CH:4]=[CH:3][CH:2]=1.[NH2:18][CH2:19][CH:20]([OH:32])[CH2:21][N:22]1[CH2:31][CH2:30][C:29]2[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=2)[CH2:23]1>CCO>[CH2:23]1[C:24]2[C:29](=[CH:28][CH:27]=[CH:26][CH:25]=2)[CH2:30][CH2:31][N:22]1[CH2:21][CH:20]([OH:32])[CH2:19][NH:18][C:13](=[O:15])[CH2:12][O:11][C:1]1[C:10]2[CH2:9][CH2:8][CH2:7][CH2:6][C:5]=2[CH:4]=[CH:3][CH:2]=1

Participants

Conditions

Temperature: 120 °C

Procedure

To a stirred mixture of ethyl 2-((5,6,7,8-tetrahydronaphthalen-1-yl)oxy)acetate (150 mg, 0.641 mmol) in EtOH (2 mL) was added 1-amino-3-(3,4-dihydroisoquinolin-2(1H)-yl)propan-2-ol (132 mg, 0.641 mmol). The mixture was stirred at 120° C. for 0.5 hours under microwave heating. After evaporation of the solvent, the residue was purified by prep-HPLC to afford the desired target product N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-((5,6,7,8-tetrahydronaphthalen-1-yl)oxy)acetamide (14 mg, Yield 6%). 1H NMR (400 MHz, MeOD) δ=7.13-7.00 (m, 5H), 6.74 (d, J=7.8 Hz, 1H), 6.65 (d, J=8.3 Hz, 1H), 4.53 (s, 2H), 4.02 (quin, J=5.9 Hz, 1H), 3.72-3.63 (m, 2H), 3.53-3.45 (m, 1H), 3.39 (d, J=6.3 Hz, 1H), 2.96-2.86 (m, 2H), 2.83-2.69 (m, 6H), 2.56 (d, J=6.3 Hz, 2H), 1.84-1.74 (m, 4H). LCMS (m/z): 395.1 (M+1).

Workup

temperatureheating
customAfter evaporation of the solvent
customthe residue was purified by prep-HPLC

Sources & evidence

ORD record: ord-7caacc65b8e4498597d0676e2028614b
Source dataset: uspto-grants-2015_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08940726B2

Reaction notes

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