4-Aminotetrahydropyran → HCID 45227713, compound

HRID 1399805Notes

Reaction equation

[CH2:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:4][CH2:3][N:2]1[CH2:11][CH:12]([OH:23])[CH2:13][O:14][C:15]1[CH:16]=[C:17]([CH:20]=[CH:21][CH:22]=1)[CH:18]=O.[O:24]1[CH2:29][CH2:28][CH:27]([NH2:30])[CH2:26][CH2:25]1.[BH-](OC(C)=O)(OC(C)=O)OC(C)=O.[Na+]>C(Cl)Cl>[CH2:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH2:4][CH2:3][N:2]1[CH2:11][CH:12]([OH:23])[CH2:13][O:14][C:15]1[CH:22]=[CH:21][CH:20]=[C:17]([CH2:18][NH:30][CH:27]2[CH2:28][CH2:29][O:24][CH2:25][CH2:26]2)[CH:16]=1

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of 3-(3-(3,4-dihydroisoquinolin-2(1H)-yl)-2-hydroxypropoxy)benzaldehyde (200 mg, 0.64 mmol) in DCM (15 mL) was added tetrahydro-2H-pyran-4-amine (97 mg, 0.96 mmol). The solution was heated at 60° C. for 0.5 h. Then, NaBH(OAc)3 (204 mg, 0.96 mmol) was added into the reaction mixture and heated at 60° C. for another 1 h. The reaction mixture was quenched by adding 1N HCl aqueous solution and diluted with DCM then washed with NaHCO3 aqueous solution. The separated organic layer was concentrated and the crude product was purified by preparative HPLC purification. (40 mg, yield 17%) MS (ESI+) e/z: 397.2 [M+1]+. 1H NMR (MeOD, 400 MHz), δ ppm: 7.36 (t, J=8.0 Hz, 1H), 7.19-7.15 (m, 3H), 7.11-7.02 (m, 4H), 4.39-4.33 (m, 1H), 4.16 (s, 2H), 4.08-4.00 (m, 6H), 3.49-3.40 (m, 3H), 3.25-3.20 (m, 2H), 3.15-3.03 (m, 4H), 2.12-2.02 (m, 2H), 1.71-1.60 (m, 2H).

Workup

temperatureheated at 60° C. for another 1 h
customThe reaction mixture was quenched
additionby adding 1N HCl aqueous solution
additiondiluted with DCM
washthen washed with NaHCO3 aqueous solution
concentrationThe separated organic layer was concentrated
customthe crude product was purified by preparative HPLC purification

Sources & evidence

ORD record: ord-39797ef07ff944a78f665c748e3303e5
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08906900B2

Reaction notes

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