In this study, the manganese(III) acetate mediated radical addition-cyclization reactions of ferrocene substituted alkenes and active methylene compounds were carried out. The regio- and stereoselective radical cyclization reactions of (E)-styrylferrocene (1a) and active methylene compounds (2a-g) gave trans-5-ferrocenyl-4-phenyl-4,5-dihydrofuran compounds as the sole products. The reactions of 1-ferrocenyl-1-aryl(heteroaryl)ethenes (1b-e) and active methylene compounds (2a-f) via Mn(OAc)₃ led to furan and benzofuran derivatives (10–33) in mid-good yields (up to 75%). Surprisingly, ferrocene substituted allylidene derivatives were obtained from the Mn(OAc)₃ mediated reactions of 1-aryl-1-ferrocenylethene (1b-d) and 1,3-dimethylbarbituric acid (2g). The uses of ferrocene substituted alkenes in manganese(III) acetate mediated radical reactions is the first example in this field as far as we know.

在这项研究中，进行了乙酸锰（III）介导的二茂铁取代烯烃与活性亚甲基化合物的自由基加成环化反应。（E）-苯乙烯基二茂铁（1a）与活性亚甲基化合物（2a-g）的区域和立体选择性自由基环化反应产生反式-5-二茂铁基-4-苯基-4,5-二氢呋喃化合物。1-二茂铁基-1-芳基（杂芳基）乙烯（1b-e）与活性亚甲基化合物（2a-f）通过Mn（OAc）_3的反应可产生中等收率的呋喃和苯并呋喃衍生物（10-33） （高达75％）。出人意料地，从Mn（OAc）获得二茂铁取代的亚芳基衍生物。₃介导的1-芳基-1-二茂铁基乙烯（1b-d）和1,3-二甲基巴比妥酸（2g）的反应。据我们所知，二茂铁取代的烯烃在乙酸锰（III）介导的自由基反应中的应用是该领域的第一个例子。