Carbon tetrabromide → HCID 67809812, compound

Participants

Reaction Steps

To a solution of (2E)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butenol (Chem. Abstr., 94, 65904 h) (4.15 g) and tetrabromomethane (7.0 g) in dichloromethane (40 ml) is added over 20 min a solution of triphenylphosphine (5.51 g) in dichloromethane (30 ml). The mixture is stirred overnight under nitrogen, the solvent is removed, and the residue is triturated with hexane. The mixture is filtered, and the filtrate concentrated in vacuo to provide (2E)-1-bromo-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butene (5.25 g) as an orange oil.

Provenance & Evidence