Hydrochloric Acid → HCID 15578400, compound

HRID 544161Notes

Reaction equation

HRID 544161 reaction equation
[OH:1][C:2]1[C:3](=[O:21])[CH:4]=[C:5]([C:16]([O:18]CC)=[O:17])[O:6][C:7]=1[C:8]1[CH:13]=[CH:12][C:11]([O:14][CH3:15])=[CH:10][CH:9]=1.Cl>O1CCOCC1>[OH:1][C:2]1[C:3](=[O:21])[CH:4]=[C:5]([C:16]([OH:18])=[O:17])[O:6][C:7]=1[C:8]1[CH:9]=[CH:10][C:11]([O:14][CH3:15])=[CH:12][CH:13]=1

Participants

4

Reactant 2

HCID 313Hydrochloric AcidHCID 15578398HCID 15578398, compound

Product 1

HCID 15578400HCID 15578400, compound

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A solution of ethyl 5-hydroxy-6-(4-methoxyphenyl)-4-oxo-4H-pyran-2-carboxylate (2.6 g), prepared as described in Example 47, in dioxan (30 ml) and concentrated hydrochloric acid (20 ml) was heated on a steam bath for 2 hours. The solid product was recrystallised from ethanol to give the title product (mp 258°-260° C. with decomposition).

Workup

  1. customThe solid product was recrystallised from ethanol

Sources & evidence

ORD record
ord-ab3ccf09570d495cba1b0d810740526f
Source dataset
uspto-grants-1984_05
Patent number
US04448787

Reaction notes

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