Boron tribromide → HCID 53734243, compound

HRID 2417952Notes

Reaction equation

HRID 2417952 reaction equation
C[O:2][C:3]1[CH:8]=[CH:7][C:6]([CH:9]=[CH:10][C:11]2[O:12][C:13](C3C=CC=CC=3)=[CH:14][C:15](=[O:17])[CH:16]=2)=[CH:5][CH:4]=1.B(Br)(Br)Br>CCOCC>[OH:2][C:3]1[CH:8]=[CH:7][C:6]([CH:9]=[CH:10][C:11]2[O:12][CH:13]=[CH:14][C:15](=[O:17])[CH:16]=2)=[CH:5][CH:4]=1

Participants

4

Reactant 2

HCID 25134Boron tribromideHCID 53718901HCID 53718901, compound

Product 1

HCID 53734243HCID 53734243, compound

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent

Procedure

The ether linkage of 2-[2-(4-methoxyphenyl)ethenyl]-6-phenyl-4H-pyran-4-one was cleaved with boron tribromide as described in Example 47 to give the title product as orange needles (mp 198°-201° C.).

Sources & evidence

ORD record
ord-56d5c8845108499eb9522b1ba448d5f8
Source dataset
uspto-grants-1984_09
Patent number
US04471129

Reaction notes

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