Iron(III) p-toluenesulfonate, Fe(OTs)3.6H20, is an inexpensive, versatile and commercially available catalyst for the allylation of acetals using allyltrimethylsilane to yield homoallyl ethers in moderate to good yields. The one-pot conversion of aldehydes to homoallyl ethers using alkoxysilanes has also been accomplished using Fe(OTs)3.6H20 as a catalyst. The use of mild reaction conditions and a relatively non-corrosive catalyst make this method an attractive option for the synthesis of a range of homoallyl ethers.
Mohan, Ram; Spafford, Matthew; Anderson, Erin; Lacey, Joshua; and Palma, Ann, "Iron(III) p-Toluenesulfonate Catalyzed Synthesis of Homoallyl Ethers from Acetals and Aldehydes" (2007). Scholarship. 8.