Phosphorus tribromide → HCID 53884915, compound

HRID 1703964Notes

Reaction equation

HRID 1703964 reaction equation
[CH2:1]1[O:9][C:8]2[CH:7]=[CH:6][C:5]([CH:10]=[CH:11][CH:12]([C:14]3([CH2:17][CH3:18])[CH2:16][CH2:15]3)O)=[CH:4][C:3]=2[O:2]1.P(Br)(Br)[Br:20].[Br-].[Li+]>[Br-].[Zn+2].[Br-]>[CH2:17]([C:14](=[CH:12][CH:11]=[CH:10][C:5]1[CH:6]=[CH:7][C:8]2[O:9][CH2:1][O:2][C:3]=2[CH:4]=1)[CH2:15][CH2:16][Br:20])[CH3:18]

Participants

5

Reactant 3

HCID 24614Phosphorus tribromideHCID 82050Lithium BromideHCID 54280632HCID 54280632, compound

Product 1

HCID 53884915HCID 53884915, compound

Reagents, catalysts & solvents 1

HCID 10421208Zinc bromideCatalyst

Procedure

3-Ethyl-6-(3,4-methylenedioxyphenyl)-3,5-hexadienyl bromide [VIII; Ar is 3,4-methylenedioxyphenyl, R is C2H5 ] was prepared from 3.6 g. of 2-(3,4-methylenedioxyphenyl)vinyl 1-ethylcyclopropyl carbinol (Preparation B9), 3.5 g. of phosphorus tribromide, 4.5 g. of lithium bromide and 3.5 g. of zinc bromide according to the procedure given above in Preparation C1 according to 2 g. of product as an oil.

Sources & evidence

ORD record
ord-595aa595aa8642b09350c14618f26830
Source dataset
uspto-grants-1978_11
Patent number
US04125541

Reaction notes

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