Rp. Spencer et J. Schwartz, Titanium(III) reagents in carbohydrate chemistry: Glycal and C-glycoside synthesis, TETRAHEDRON, 56(15), 2000, pp. 2103-2112
Titanocene(III) chloride and zirconcene(III) chloride are effective and mil
d reagents for radical generation in organic synthesis. In carbohydrate che
mistry, these species are useful for the conversion of glycosyl halides to
glycals, and for the stereospecific preparation of C-glycosides. In all cas
es, the 1-glycosyl radical is an active intermediate, generated by reaction
of carbohydrate substrates with the organometallic. (C) 2000 Elsevier Scie
nce Ltd. All rights reserved.