... Downloading zip file containing 3 articles... JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 23, Issue 47, 1982, Pages 4937–4940. Cover image Cover image. Titanium-induced conjugated addition of the fluorenone dianion to α, β-enones. ... 2; JM Pons, JP Zahra, M. Santelli; Tetrahedron Lett. (1981), p. 3965. ...