Dimethylformamide → HCID 54223833, compound

HRID 1781262Notes

Reaction equation

[CH2:1]([O:8][C@@H:9]1[CH2:15][C@H:14]([O:16][CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[C@@H:13]([CH2:24][O:25][CH2:26][C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[O:12][CH:10]1O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CN(C=O)C.C(Br)(=O)C([Br:41])=O>ClCCl>[CH2:1]([O:8][C@@H:9]1[CH2:15][C@H:14]([O:16][CH2:17][C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=2)[C@@H:13]([CH2:24][O:25][CH2:26][C:27]2[CH:32]=[CH:31][CH:30]=[CH:29][CH:28]=2)[O:12][CH:10]1[Br:41])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 0 °C

Procedure

3-Deoxy-2,4,6-tri-O-benzyl-glucopyranose (2.2 g) was dissolved in dichloromethane (20 mL) and dry DMF (880 μL) was added. The reaction solution was cooled at 0° C. and oxalyl bromide (500 μL) was added and the resulting solution stirred at 0° to 5° C. for 1 hour. The solution was then diluted with dichloromethane (100 mL) and washed with water (3×100 mL), dried over sodium sulfate, filtered and evaporated to dryness to obtain 3-deoxy-2,4,6-tri-O-benzyl-glucopyranosyl bromide (compound 13).

Workup

washwashed with water (3×100 mL)
dry with materialdried over sodium sulfate
filtrationfiltered
customevaporated to dryness

Sources & evidence

ORD record: ord-cd7c12114e984514b8d82b35efd01ccd
Source dataset: uspto-grants-1997_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05633233

Reaction notes

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