3‐Methyl‐2‐butenylmagnesium Bromide/Chloride

Abstract image (X = Cl) [ 32916‐51‐1 ] C 5 H 9 ClMg (MW 128.90) InChI = 1S/C5H9.ClH.Mg/c1‐4‐5(2)3;;/h4H,1H2,2‐3H3;1H;/q;;+1/p‐1 InChIKey = LICPNZOGRCGBTL‐UHFFFAOYSA‐M (X = Br) [ 63847‐45‐0 ] C 5 H 9 BrMg (MW 173.35) InChI = 1S/C5H9.BrH.Mg/c1‐4‐5(2)3;;/h4H,1H2,2‐3H3;1H;/q;;+1/p‐1 InChIKey = LPZLSASBWHZOMX‐UHFFFAOYSA‐M (terpene synthesis) Alternate Names: chloro(3‐methyl‐2‐butenyl)magnesium; prenylmagnesium chloride. Physical Data: 13 C NMR solution data have been reported. 2 Solubility: sol ether, THF. Purification: solutions should be titrated before use by one of the standard methods. Preparative Methods: prepared in situ under an inert atmosphere from prenyl chloride and an excess of magnesium in ether 3 or in THF. 4 Handling, Storage, and Precautions: is air‐ and moisture‐sensitive and is best stored at −20 °C under argon.