Pyridine → 6-(Diethylamino)-2-benzofurancarboxaldehyde

HRID 1709313Notes

Reaction equation

C([CH:3]1[C:7]([C:8]2[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=2)=CO[C:4]1=[O:14])#N.C1(=[O:20])CCCC1.C(C(C#N)=C1C=C(C)OC(C)=C1)#N.[N:34]1[CH:39]=[CH:38]C=[CH:36][CH:35]=1>>[CH2:35]([N:34]([C:11]1[CH:12]=[CH:13][C:8]2[CH:7]=[C:3]([CH:4]=[O:14])[O:20][C:9]=2[CH:10]=1)[CH2:39][CH3:38])[CH3:36]

Participants

Reactant 4

HCID 1049Pyridine

HCID 8452Cyclopentanone

HCID 1199154-(Dicyanomethylene)-2,6-dimethyl-4H-pyran

HCID 151652113-Cyano-4-phenyl-2-furanone

Product 1

HCID 147167106-(Diethylamino)-2-benzofurancarboxaldehyde

Procedure

The new dyes of this invention are prepared by condensation of the new intermediates of Examples 1 and 2 in pyridine with an active methylene compound such as 3-cyano-4-phenyl-2-furanone, cyclopentanone, 4-dicyanomethylene-2,6-dimethyl-4H-pyran, 3-acetyl-7-(N,N-dialkylamino)coumarins and the like.

Sources & evidence

ORD record: ord-23dce8cf52d74c00bd2ee97b0094e9fe
Source dataset: uspto-grants-1990_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04948895

Reaction notes

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