... Please enable JavaScript to use all the features on this page. Tetrahedron Letters. Volume 44, Issue 3, 13 January 2003, Pages 439–442. Cover image Cover image. ... 3i, 4-(OEt)C 6 H 4, H, 4, 73, 111–12. 3j, 3-BrC 6 H 4, H, 7, 87, 43–44. 3k, 4-(C 6 H 11 )C 6 H 4, H, 13, 72, 73–74. a ...