2-Methylquinoline-6-carboxylic acid → (R)-N-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropyl)-2-methylquinoline-6-carboxamide

HRID 880335Notes

Reaction equation

[CH3:1][C:2]1[CH:11]=[CH:10][C:9]2[C:4](=[CH:5][CH:6]=[C:7]([C:12]([OH:14])=O)[CH:8]=2)[N:3]=1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[NH2:39][CH2:40][C@@H:41]([OH:53])[CH2:42][N:43]1[CH2:52][CH2:51][C:50]2[C:45](=[CH:46][CH:47]=[CH:48][CH:49]=2)[CH2:44]1>C(Cl)Cl>[CH2:44]1[C:45]2[C:50](=[CH:49][CH:48]=[CH:47][CH:46]=2)[CH2:51][CH2:52][N:43]1[CH2:42][C@H:41]([OH:53])[CH2:40][NH:39][C:12]([C:7]1[CH:8]=[C:9]2[C:4](=[CH:5][CH:6]=1)[N:3]=[C:2]([CH3:1])[CH:11]=[CH:10]2)=[O:14]

Participants

Conditions

Temperature: 15 °C

Procedure

To a solution of 2-methylquinoline-6-carboxylic acid (200 mg, 1.070 mmol) in DCM (30 mL), was added HATU (489 mg, 1.283 mmol) and TEA (324 mg, 3.208 mmol). The solution was stirred at 15° C. for 30 minutes before (R)-1-amino-3-(3,4-dihydro isoquinolin-2(1H)-yl)propan-2-ol (264 mg, 1.283 mmol) was added. The resulting solution was stirred for another 16 h at 15° C., until the reaction was complete by LCMS analysis. The mixture was then concentrated under vacuum to give the crude material which was purified by Preparative HPLC to give the title compound (118 mg, 29%). 1H NMR (400 MHz, METHANOL-d4) δ 8.33 (d, J=1.9 Hz, 1H), 8.15 (d, J=8.5 Hz, 1H), 8.09 (dd, J=2.1, 8.8 Hz, 1H), 7.93 (d, J=8.8 Hz, 1H), 7.49 (d, J=8.4 Hz, 1H), 7.15-7.05 (m, 4H), 4.18 (quin, J=6.1 Hz, 1H), 3.79 (s, 2H), 3.63-3.55 (m, 2H), 2.95-2.90 (m, 4H), 2.76 (s, 3H), 2.76-2.68 (m, 2H). LCMS (m/z): 376.1 [M+H]+

Workup

additionwas added
concentrationThe mixture was then concentrated under vacuum
customto give the crude material which
customwas purified by Preparative HPLC

Sources & evidence

ORD record: ord-5d391223943d4b1db1f8596f1ee29b42
Source dataset: uspto-grants-2015_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08993555B2

Reaction notes

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