The Scripps Research Institute

Bing Gao

K Barry Sharpless

Peng Wu

Jiajia Dong

Zilei Liu

Hua Wang

Suhua Li

Thionyl tetrafluoride gas reacts efficiently with primary amines to form reactive iminosulfur oxydifluoride compounds. These dual S&#x2014;F loaded iminosulfur oxydifluoride compounds, in turn, readily react with secondary amines or aryloxy silyl ethers (ArO&#x2014;SiR), yielding the corresponding fused heteroatom-linked substrates. Iminosulfur oxyfluoride polymers also are provided by disclosed methods.

Thionyl tetrafluoride modified compounds and uses

Condensation of fluoro-substituted and silyl-substituted monomers provides polymers suitable for use, e.g., as engineering polymers. A monomer composition is condensed in the presence of a bifluoride or poly(hydrogen fluoride) fluoride salt. The monomer composition contains a compound of formula F-X-F and a compound of formula (R)Si&#x2014;Z&#x2014;Si(R), and forms an alternating X-Z polymer chain and a silyl fluoride byproduct. X has the formula -A(-R-A)n-; each A is SO, C(&#x2550;O), or Het; Ris an organic moiety; n is 0 or 1; Het is an aromatic nitrogen heterocycle; Z has the formula -L-R-L-; each L is O, S, or N(R); and each Ris an organic moiety, and Rcomprises H or an organic moiety.

Polymerization of silyl- and fluoro-containing monomers

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Bing Gao