Water → HCID 86667565, compound

HRID 85274Notes

Reaction equation

[CH2:1]([N:5]([CH2:22][CH2:23][CH2:24][CH3:25])[C:6]1[CH:11]=[CH:10][C:9]([CH:12]=[CH:13][C:14]2[S:18][C:17]([CH:19]=[O:20])=[CH:16][CH:15]=2)=[C:8]([OH:21])[CH:7]=1)[CH2:2][CH2:3][CH3:4].[CH2:26]([CH:28]1[O:30][CH2:29]1)Br.C(=O)([O-])[O-].[K+].[K+].O>CN1CCCC1=O.C(OCC)(=O)C>[CH2:22]([N:5]([CH2:1][CH2:2][CH2:3][CH3:4])[C:6]1[CH:11]=[CH:10][C:9]([CH:12]=[CH:13][C:14]2[S:18][C:17]([CH:19]=[O:20])=[CH:16][CH:15]=2)=[C:8]([O:21][CH2:26][CH:28]2[CH2:29][O:30]2)[CH:7]=1)[CH2:23][CH2:24][CH3:25]

Participants

Conditions

Temperature: 60 °C

Procedure

In 15 ml of 1-methyl-2-pyrrolidone were dissolved 0.76 g (2.13 mmol) of 5-[2-(4-dibutylamino-2-hydroxyphenyl)vinyl]thiophene-2-carboaldehyde and 0.8 g (5.84 mmol) of epibromohydrin. To this mixture was added 0.59 g (4.27 mmol) of anhydrous potassium carbonate and the mixture was stirred with heating at 60° C. for 4 hours. After the reaction mixture was poured into water, extraction with ethyl acetate, washing with a saturated saline solution, drying over anhydrous sodium sulfate, and concentration were performed. The residual liquid was purified by silica gel column chromatography. From the earlier fraction, 0.31 g of 5-[2-[4-dibutylamino-2-(oxiranylmethoxy)phenyl]vinyl]thiophene-2-carboaldehyde was obtained. From the later fraction, 0.45 g of 5-[2-[2-(3-bromo-2-hydroxypropoxy)-4-dibutylaminophenyl]vinyl]thiophene-2-carboaldehyde was obtained.

Workup

washwashing with a saturated saline solution
dry with materialdrying over anhydrous sodium sulfate, and concentration
customThe residual liquid was purified by silica gel column chromatography

Sources & evidence

ORD record: ord-10f9038da5d74eeaa6bac727465173ae
Source dataset: uspto-grants-2014_09
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08846955B2

Reaction notes

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