“…The example of Scheme 34 illustrates the synthesis of spiropentane 67 from the electrolysis of 1,3-dibromo-2,2-bis (bromomethyl)propane 66 at a mercury cathode. 105 More recent work concerning the direct reduction of a,odihaloalkanes in DMF confirmed that, while the direct electrolyses of 1,3-dihalopropanes afforded cyclopropanes in high yields, 106 the direct reduction of higher 1,o-dihaloalkanes [107][108][109] gave the corresponding cyclic derivatives in very low yields. However, in the presence of electrogenerated Ni I (salen), 1,6-dibromohexane affords cyclohexane in up to 78% yield in DMF.…”