2-Thiophenecarboxylic acid, tetrahydro-3-oxo-, methyl ester → HCID 21433899, compound

HRID 1282844Notes

Reaction equation

HRID 1282844 reaction equation
O=[C:2]1[CH2:6][CH2:5][S:4][CH:3]1[C:7]([O:9][CH3:10])=[O:8].[CH:11]1([CH:17]([C:19]2[CH:20]=C(O)[CH:22]=[C:23]([CH:25]=2)[OH:24])[CH3:18])[CH2:16][CH2:15][CH2:14][CH2:13][CH2:12]1>>[CH:11]1([CH:17]([C:19]2[CH:25]=[C:23]([OH:24])[C:22]3[C:2]4[CH2:6][CH2:5][S:4][C:3]=4[C:7](=[O:8])[O:9][C:10]=3[CH:20]=2)[CH3:18])[CH2:16][CH2:15][CH2:14][CH2:13][CH2:12]1

Participants

3

Reactant 2

HCID 1028702-Thiophenecarboxylic acid, tetrahydro-3-oxo-, methyl esterHCID 21532614HCID 21532614, compound

Product 1

HCID 21433899HCID 21433899, compound

Procedure

Following a procedure similar to that described in Example 1B hereinabove, methyl 3-oxo-2,3,4,5-tetrahydrothiophene-2-carboxylate is reacted with 5-(1-cyclohexylethyl) resorcinol to give 7-(1-cyclohexylethyl)-1,2-dihydro-9-hydroxy-4-oxo-4H-thieno[2,3-c] [1]benzopyran.

Sources & evidence

ORD record
ord-50d01f42d31b46da8f65e84e1fd2ca42
Source dataset
uspto-grants-1976_08
Patent number
US03972880

Reaction notes

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