Tetrahydrofuran → 2-((4-(3-(4-Bromophenyl)benzo[d]isothiazol-6-yl)-2-methylbut-3-yn-2-yl)(ethyl)amino)ethanol

HRID 270458Notes

Reaction equation

C(OP(=O)(OCC)O[C:6]([CH3:26])([CH3:25])[C:7]#[C:8][C:9]1[CH:24]=[CH:23][C:12]2[C:13]([C:16]3[CH:21]=[CH:20][C:19]([Br:22])=[CH:18][CH:17]=3)=[N:14][S:15][C:11]=2[CH:10]=1)C.[CH2:31]([NH:33][CH2:34][CH2:35][OH:36])[CH3:32].C1COCC1.C([O-])(O)=O.[Na+]>CCOC(C)=O>[Br:22][C:19]1[CH:18]=[CH:17][C:16]([C:13]2[C:12]3[CH:23]=[CH:24][C:9]([C:8]#[C:7][C:6]([N:33]([CH2:31][CH3:32])[CH2:34][CH2:35][OH:36])([CH3:25])[CH3:26])=[CH:10][C:11]=3[S:15][N:14]=2)=[CH:21][CH:20]=1

Participants

Conditions

Temperature: 50 °C

Procedure

To 45 mg (0.09 mmol) Phosphoric acid 3-[3-(4-bromo-phenyl)-benzo[d]isothiazol-6-yl]-1,1-dimethyl-prop-2-ynyl ester diethyl ester and 16 μl (0.18 mmol) 2-Ethylaminoethanol in 0.5 ml THF 10.2 mg (0.01 mmol) tetrakis(triphenylphosphine)palladium was added and the suspension stirred at 50° C. over night. The mixture was added to a saturated aqueous solution of NaHCO3 and EtOAc, the phases were separated and the inorganic one was extracted with EtOAc. The combined organic phases were washed with brine and dried over Na2SO4. Column chromatography on silica gel with CH2Cl2:MeOH 95:5 gave 2-((3-[3-(4-Bromo-phenyl)-benzo[d]isothiazol-6-yl]-1,1-dimethyl-prop-2-ynyl)-ethyl-amino)-ethanol as yellow semisolid, MS: 443 (MH+, 1Br).

Workup

customthe phases were separated
extractionthe inorganic one was extracted with EtOAc
washThe combined organic phases were washed with brine
dry with materialdried over Na2SO4

Sources & evidence

ORD record: ord-57cd6617c62348b598c141f5b80936e9
Source dataset: uspto-grants-2008_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07449483B2

Reaction notes

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