Ym. Pustovit et al., REACTIONS OF CYCLOALKANECARBOXYLIC ACIDS WITH SF4-CENTER-DOT .1. FLUORINATION OF CYCLOPROPANEPOLYCARBOXYLIC ACIDS WITH SF4, Journal of fluorine chemistry, 69(3), 1994, pp. 225-229
Cyclopropanecarboxylic acids possessing more than one carboxylic group
readily undergo fluorination when treated with SF4 to yield the corre
sponding poly(trifluoromethyl)cyclopropanes and bicyclic ethers.