... Please enable JavaScript to use all the features on this page. Tetrahedron: Asymmetry. Volume 9, Issue 15, August 1998, Pages 2701–2713. Cover image Cover image. ... HCl (10 M)/dioxane (1:1 vol:vol); 110°C; 6–8 days. (viii) 1. MeOH/98% H 2 SO 4 (cat); reflux; 3 days. ...