Boron tribromide → HCID 54042377, compound

HRID 1659489Notes

Reaction equation

HRID 1659489 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]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=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][C:13]([C:18]3[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=3)=[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 54042377HCID 54042377, 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-f2e5f7d491fc49fea3c7be363346e4f4
Source dataset
uspto-grants-1981_12
Patent number
US04304728

Reaction notes

Loading…