2-Thiophenecarboxylic acid, tetrahydro-3-oxo-, methyl ester → HCID 21433869, compound

HRID 1657643Notes

Reaction equation

HRID 1657643 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:31]1[CH:32]=C(O)[CH:34]=[C:35]([CH:37]=1)[OH:36])[CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH3:30]>>[CH3:11][CH:12]([C:31]1[CH:37]=[C:35]([OH:36])[C:34]2[C:2]3[CH2:6][CH2:5][S:4][C:3]=3[C:7](=[O:8])[O:9][C:10]=2[CH:32]=1)[CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH2:29][CH3:30]

Participants

3

Reactant 2

HCID 1028702-Thiophenecarboxylic acid, tetrahydro-3-oxo-, methyl esterHCID 54091993HCID 54091993, compound

Product 1

HCID 21433869HCID 21433869, 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-eicosyl)resorcinol to give 1,2-dihydro-7-(2-eicosyl)-9-hydroxy-4-oxo-4H-thieno [2,3-c] [1]benzopyran.

Sources & evidence

ORD record
ord-ba80e9edcdde4883ba8f7566bfe6dd08
Source dataset
uspto-grants-1976_06
Patent number
US03960871

Reaction notes

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