2-Thiophenecarboxylic acid, tetrahydro-3-oxo-, methyl ester → HCID 21433878, compound

HRID 2398900Notes

Reaction equation

HRID 2398900 reaction equation
O=[C:2]1[CH2:6][CH2:5][S:4][CH:3]1[C:7]([O:9][CH3:10])=[O:8].[CH3:11][CH:12]([C:18]1[CH:19]=C(O)[CH:21]=[C:22]([CH:24]=1)[OH:23])[CH2:13][CH2:14][CH2:15][CH2:16][CH3:17]>>[CH3:11][CH:12]([C:18]1[CH:24]=[C:22]([OH:23])[C:21]2[C:2]3[CH2:6][CH2:5][S:4][C:3]=3[C:7](=[O:8])[O:9][C:10]=2[CH:19]=1)[CH2:13][CH2:14][CH2:15][CH2:16][CH3:17]

Participants

3

Reactant 2

HCID 1028702-Thiophenecarboxylic acid, tetrahydro-3-oxo-, methyl esterHCID 21435454HCID 21435454, compound

Product 1

HCID 21433878HCID 21433878, 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-(2-heptyl)resorcinol to give 1,2-dihydro-7-(2-heptyl)-9-hydroxy-4-oxo-4H-thieno [2,3-c][1]benzopyran.

Sources & evidence

ORD record
ord-fb2956c608a3448589d90bcfccc4f85a
Source dataset
uspto-grants-1977_05
Patent number
US04025630

Reaction notes

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