An acylium ion and a phenolate of this element form as intermediates in the Fries rearrangement.
A diethyl cyanide of this element is known as Nagata's reagent. An alkene inserts into a bond between this element and carbon in a non-Negishi coupling reaction developed by Ei-ichi Negishi. The "red" form of this compound, also known as SMEAH, catalyzes the production of E-allylic alcohols in the Chan alkyne reduction. An acylium ion and a phenolate of this element form as intermediates in the Fries rearrangement. Two atoms of this element are present in a common reagent that reduces nitriles and esters to aldehydes. A methylene bridge and a chlorine atom connect this element to (*) titanium in Tebbe's reagent. A more powerful reducing agent than sodium borohydride is a hydride of lithium and this element, which is present along with titanium in Ziegler-Natta catalysts, and the most common catalyst for a Friedel-Crafts catalyst is this element's trichloride. For 10 points, name this element from the boron group which is refined in the Bayer process from its ore bauxite.
A diethyl cyanide of this element is known as Nagata's reagent.
aluminum [or Al]