Dimethyl Sulfide → HCID 86301485, compound

HRID 1748391Notes

Reaction equation

HRID 1748391 reaction equation
[F:1][C:2]1[CH:22]=[CH:21][C:5]([CH2:6][O:7][C:8]2[CH:17]=[C:16]3[C:11]([CH:12]=[C:13]([C:18](=[O:20])[CH3:19])[CH:14]=[N:15]3)=[CH:10][CH:9]=2)=[CH:4][CH:3]=1.B1(C)OC(C2C=CC=CC=2)(C2C=CC=CC=2)[C@H]2N1CCC2.CSC>C1(C)C=CC=CC=1>[F:1][C:2]1[CH:22]=[CH:21][C:5]([CH2:6][O:7][C:8]2[CH:17]=[C:16]3[C:11]([CH:12]=[C:13]([C@@H:18]([OH:20])[CH3:19])[CH:14]=[N:15]3)=[CH:10][CH:9]=2)=[CH:4][CH:3]=1

Participants

5

Reactant 3

HCID 1068Dimethyl SulfideHCID 2734713(3aS)-1-methyl-3,3-diphenyl-hexahydropyrrolo(1,2-c)(1,3,2)oxazaboroleHCID 86301334HCID 86301334, compound

Product 1

HCID 86301485HCID 86301485, compoundYield 17.2%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Conditions

Temperature
-20 °C

Procedure

To a cooled solution, −78° C., of 1-(7-((4-fluorobenzyl)oxy)quinolin-3-yl)ethanone (Example 42, 52 mg, 0.176 mmol) in toluene was added (S)-(−)-2-methyl-CBS-oxazaborolidine (97 mg, 0.352 mmol) followed by BH3.DMS (2 M in THF, 0.176 mL, 0.352 mmol). The reaction was warmed to −20° C. and stirred for 3 h before being quenched with MeOH. The reaction was warmed to ambient temperature and sat. NaHCO3 (aq.) solution was added. The aqueous layer was extracted with EtOAc and the combined organic fractions were washed with brine and concentrated under reduced pressure onto silica. Purification (FCC, SiO2, 0-5%, MeOH/DCM) afforded the title compound as a white solid (9 mg, 17%). 1H NMR (400 MHz, DMSO-d6) δ 8.85 (d, J=2.3 Hz, 1H), 8.20 (d, J=2.0 Hz, 1H), 7.93 (d, J=9.0 Hz, 1H), 7.61 (dd, J=5.5, 8.6 Hz, 2H), 7.51 (d, J=2.3 Hz, 1H), 7.33 (dd, J=2.5, 8.8 Hz, 1H), 7.28 (t, J=9.0 Hz, 2H), 5.44 (d, J=4.3 Hz, 1H), 5.29 (s, 2H), 5.01-4.91 (m, 1H), 1.47 (d, J=6.7 Hz, 3H). [M+H]=298.2.

Workup

  1. custombefore being quenched with MeOH
  2. temperatureThe reaction was warmed to ambient temperature
  3. additionsat. NaHCO3 (aq.) solution was added
  4. extractionThe aqueous layer was extracted with EtOAc
  5. washthe combined organic fractions were washed with brine
  6. concentrationconcentrated under reduced pressure onto silica
  7. customPurification (FCC, SiO2, 0-5%, MeOH/DCM)

Sources & evidence

ORD record
ord-698c523bf215491095bd8da86d4bb12a
Source dataset
uspto-grants-2015_10
Patent number
US09150572B2

Reaction notes

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