Suggested Reaction 1.1.4.-

Left

(1R,4S)-1,3,3-Trimethyl-2-oxabicyclo[2.2.2]octan-6-one
+1,4-Dithiothreitol

Right

6-endo-Hydroxycineole
+Oxidized dithiothreitol

[BiSSCat | GREP ]