Boron tribromide → HCID 9840680, compound

HRID 2114742Notes

Reaction equation

[F:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[CH2:16][C:15]3[C:10](=[CH:11][CH:12]=[C:13]([O:17]C)[CH:14]=3)[CH:9]2[CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26]CCC3CCCCN3)=[CH:22][CH:21]=2)=[CH:4][CH:3]=1.B(Br)(Br)Br>C(Cl)Cl>[F:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[CH2:16][C:15]3[C:10](=[CH:11][CH:12]=[C:13]([OH:17])[CH:14]=3)[CH:9]2[CH2:19][C:20]2[CH:25]=[CH:24][C:23]([OH:26])=[CH:22][CH:21]=2)=[CH:4][CH:3]=1

Participants

Conditions

Temperature: -10 °C

Procedure

To a solution of 2-(4-fluorophenyl)-5-methoxy-1-{4-[(2-piperidyl)ethoxy]benzyl}isoindoline (0.14 g, 0.3 mmol) in CH2Cl2 (8 mL) under nitrogen at −10° C. was added a 1.0 M solution of boron tribromide in CH2Cl2 (0.6 mL, 0.6 mmol) dropwise. After stirring at −10° C. for 1 hour, the reaction was quenched with ice and saturated sodium bicarbonate, then extracted with methylene choride. The organic layer was dried over MgSO4, filtered, and concentrated. The residue was then purified by HPLC (C-18 column, 10-100% acetonitrile/water with 0.1% trifluoroacetic acid) to provide the title compound (0.084 g, 84% yield): 1H NMR (DMSO-d6) 7.04 (t, 2H), 6.88 (d, 1H), 6.69 (dd, 1H), 6.61-6.65 (m, 5H), 6.56 (d, 1H), 5.21 (m, 1H), 4:67 (s, 1H), 4.51 (s, 1H), 4.29 (d 1H), 4.10 (dd, 1H), 3.00-3.14 (m, 2H); ES-MS (m/z) 336 [M+H]+.

Workup

customthe reaction was quenched with ice and saturated sodium bicarbonate
extractionextracted with methylene choride
dry with materialThe organic layer was dried over MgSO4
filtrationfiltered
concentrationconcentrated
customThe residue was then purified by HPLC (C-18 column, 10-100% acetonitrile/water with 0.1% trifluoroacetic acid)

Sources & evidence

ORD record: ord-de7208e5a917485c9bba3baa2156c0e7
Source dataset: uspto-grants-2008_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07435729B2

Reaction notes

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