Ts. Chou et al., TRIETHYLAMINE POLY(HYDROGEN FLUORIDES) IN THE SYNTHESIS OF A FLUORINATED NUCLEOSIDE GLYCON, Tetrahedron letters, 37(1), 1996, pp. 17-20
The stereospecific synthesis of 6 via a highly selective, noncorrosive
fluorination of 4 with Et(3)N . 3HF was discovered. The intermediate
fluorosulfonate 5 was isolated, purified and its structure verified.