Carbonate Ion → HCID 67292811, compound

HRID 1685421Notes

Reaction equation

[C:1]([O:4][C@@H:5]1[C@@H:18]([O:19][C:20](=[O:22])[CH3:21])[C@H:17]([O:23][C:24](=[O:26])[CH3:25])[CH2:16][S:15][C@H:6]1[O:7][C:8]1[CH:9]=[N:10][CH:11]=[C:12](Br)[CH:13]=1)(=[O:3])[CH3:2].[CH3:27][O:28][C:29]1[CH:34]=[CH:33][C:32](B(O)O)=[CH:31][CH:30]=1.C(=O)([O-])[O-]>COCCOC.CO>[C:1]([O:4][C@@H:5]1[C@@H:18]([O:19][C:20](=[O:22])[CH3:21])[C@H:17]([O:23][C:24](=[O:26])[CH3:25])[CH2:16][S:15][C@H:6]1[O:7][C:8]1[CH:9]=[N:10][CH:11]=[C:12]([C:32]2[CH:33]=[CH:34][C:29]([O:28][CH3:27])=[CH:30][CH:31]=2)[CH:13]=1)(=[O:3])[CH3:2]

Participants

Conditions

Temperature: 110 °C

Procedure

1 g (2.23 mM) of 5-bromo-3-pyridinyl 2,3,4-tri-O-acetyl-5-thio-β-D-xylo-pyranoside, 0.4 g (2.67 mM) of 4-methoxyphenylboronic acid, 1.6 g (4.46 mM) of carbonate resin and 0.02 g (0.004 mM) of [1,1-bis(diphenylphosphino)ferrocene]-dichloropalladium(II) dichloromethane are mixed in 7 ml of DME and 5 ml of methanol. The reaction mixture is heated for 20 minutes at 110° C. by microwaves. It is filtered, the material on the filter is rinsed with methanol and the organic phases are concentrated. The product is purified by chromatography on a silica column (eluent: dichloromethane/ethyl acetate 98/2, then 70/30; v/v) to give the expected product in the form of a cream-colored powder with a yield of 80%.

Workup

filtrationIt is filtered
washthe material on the filter is rinsed with methanol
concentrationthe organic phases are concentrated
customThe product is purified by chromatography on a silica column (eluent

Sources & evidence

ORD record: ord-134ddc40c20c44c3a00dbc5a60b5b905
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08148407B2

Reaction notes

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