Wr. Dolbier et al., A novel, non-high-dilution method for preparation of 1,1,2,2,9,9,10,10-octafluoro[2.2]paracyclophane, ORG LETT, 2(13), 2000, pp. 1867-1869
A novel synthesis of octafluoro[2.2]paracyclophane (AF4), one that remarkab
ly does not require the use of high dilution methodology, is presented. Usi
ng this unprecedented methodology, AF4 is produced in 60% yield in a reacti
on of Zn with 0.35 M p-bis(chlorodifluoromethyl)benzene in DMA at 100 degre
es C. The process comprises a convenient, inexpensive, and highly scaleable
preparation of AF4 for both research and commercial purposes.