... Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 39, Issue 30, 23 July 1998, Pages 5393–5396. Cover image Cover image. ... Tetrahedron Lett., 37 (1996), pp. 5913–5916. ... Org. Synth. Coll., Vol. 5 (1973), pp. 54–59. ...