... JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 30, Issue 47, 1989, Pages 6511–6514. Cover image Cover image. An efficient asymmetric spiroannulation process. ... J. Org. Chem., 51 (1986), p. 2671. c T. Volpe, G. Revial, M. Pfau, J. d'Angelo; Tetrahedron Lett., 28 (1987), p. 2367. d J. d'Angelo, A. Guingant, C. Riche, A. Chiaroni; Tetrahedron Lett., 29 (1988), p. 2667. ...