4-Pyridinecarboxaldehyde → 6-Methoxy-3-(4-pyridyl)methylene-4-chromanone

HRID 610385Notes

Reaction equation

HRID 610385 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[O:9][CH2:8][CH2:7][C:6]2=[O:13].[N:14]1[CH:19]=[CH:18][C:17]([CH:20]=O)=[CH:16][CH:15]=1>>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[O:9][CH2:8][C:7](=[CH:20][C:17]1[CH:18]=[CH:19][N:14]=[CH:15][CH:16]=1)[C:6]2=[O:13]

Participants

3

Reactant 2

HCID 133894-PyridinecarboxaldehydeHCID 46121686-methoxy-3,4-dihydro-2H-1-benzopyran-4-one

Product 1

HCID 540627026-Methoxy-3-(4-pyridyl)methylene-4-chromanone

Procedure

By the method of Example 1, 6-methoxy-4-chromanone (26.7 g, 0.15 mol) and pyridine-4-carbaldehyde were converted to present title product, 13.5 g; m.p. 170-171.5° C.; IR (KBr) 1675, 1616, 1598, 1552 cm-1.

Sources & evidence

ORD record
ord-2eb9c31c57e143eabed8d9137795ac13
Source dataset
uspto-grants-1999_12
Patent number
US05998451

Reaction notes

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