Manganese(II and III)-Mediated Synthesis of Cyclic Peroxides from Alkenes, Active Methylene Compounds, and Molecular Oxygen
作者:Chang-Yi Qian、Takashi Yamada、Hiroshi Nishino、Kazu Kurosawa
DOI:10.1246/bcsj.65.1371
日期:1992.5
2-acetylcyclohexanone, ethyl 2-acetyl-3-oxobutanoate, 3-methyl-2,4-pentanedione, 1,3-cyclohexanedione, and 2,4-pentanedione in the presence of Mn(OAc)2 and molecular oxygen yielded the corresponding cyclic peroxides in moderate-to-good yields. Similar reaction of 1,1-disubstituted alkenes with 1,3-cyclopentanedione in the presence of Mn(OAc)3 and molecular oxygen gave 2,2,9,9-tetraphenyloctahydro-3,4
1,1-二苯基乙烯、1,1-双(4-氯苯基)乙烯、1,1-双(4-甲基苯基)乙烯、1,1-双(4-甲氧基苯基)乙烯和1,1-的反应双(4-氟苯基)乙烯与 2-甲基-1,3-环己二酮、2-甲基-1,3-环戊二酮、2-乙酰环己酮、2-乙酰-3-氧代丁酸乙酯、3-甲基-2,4-戊二酮在Mn(OAc)2 和分子氧的存在下,1,3-环己二酮和2,4-戊二酮以中等至良好的产率产生相应的环状过氧化物。在Mn(OAc)3 和分子氧存在下,1,1-二取代烯烃与1,3-环戊二酮的类似反应得到2,2,9,9-四苯基八氢-3,4,7,8-四氧苯并[c]茚-4a,6a-二醇。4-乙酰基-6,6-二芳基-3-甲基-1,2-二恶烷-3-醇的酸催化分解以中等产率得到3-乙酰基-5-芳基-2-甲基呋喃。4-乙酰基-6,6-二芳基-3-甲基-1的处理,2-二恶烷-3-醇与碱一起得到6,6-二芳基-3-甲基-1,2-二恶烷-3