Alcohol Oxidation Catalyst and Method of Synthesizing the Same
申请人:Iwabuchi Yoshiharu
公开号:US20070232838A1
公开(公告)日:2007-10-04
An organic oxidation catalyst for alcohols which is environmentally less harmful and with which efficient oxidation can be conducted. The oxidation catalyst for alcohols is a 1-alkyl-2-azadamantan-N-oxyl which has a nitroxyl group incorporated in the adamantane skeleton and was synthesized from as a base material a bicyclic compound obtained by the Grob-type ring-opening reaction of 1,3-adamantanediol. Due to the nitroxyl group on the adamantane skeleton, the α-position hydrogen is stabilized based on Bredt's rule and the stability of the oxoammonium group generated by the oxidation thereof is ensured. Compared to TEMPO, which is a conventional oxidation catalyst, this catalyst is reduced in steric hindrance and is usable in a wide range of reaction fields. Because of this, not only a primary alcohol but a secondary alcohol having a sterically complicated structure, which has been difficult to oxidize with TEMPO, can be oxidized at a high efficiency.
ALCOHOL OXIDATION CATALYST AND METHOD OF SYNTHESIZING THE SAME
申请人:TOHOKU UNIVERSITY
公开号:EP1775296A1
公开(公告)日:2007-04-18
An organic oxidation catalyst for alcohols which is environmentally less harmful and with which efficient oxidation can be conducted. The oxidation catalyst for alcohols is a 1-alkyl-2-azadamantan-N-oxyl which has a nitroxyl group incorporated in the adamantane skeleton and was synthesized from as a base material a bicyclic compound obtained by the Grob-type ring-opening reaction of 1,3-adamantanediol. Due to the nitroxyl group on the adamantane skeleton, the α-position hydrogen is stabilized based on Bredt's rule and the stability of the oxoammonium group generated by the oxidation thereof is ensured. Compared to TEMPO, which is a conventional oxidation catalyst, this catalyst is reduced in steric hindrance and is usable in a wide range of reaction fields. Because of this, not only a primary alcohol but a secondary alcohol having a sterically complicated structure, which has been difficult to oxidize with TEMPO, can be oxidized at a high efficiency.
一种对环境危害较小并能进行高效氧化的有机醇类氧化催化剂。这种醇类氧化催化剂是一种 1-烷基-2-氮杂金刚烷-N-氧代物,它的金刚烷骨架上含有一个亚硝基,是以 1,3-金刚烷二醇通过格劳博型开环反应得到的双环化合物为基料合成的。由于金刚烷骨架上含有硝基,根据布雷特法则,α 位氢得以稳定,并确保了由其氧化产生的氧氨基团的稳定性。与传统氧化催化剂 TEMPO 相比,该催化剂的立体阻碍减少,可用于广泛的反应领域。因此,不仅是伯醇,就连 TEMPO 难以氧化的立体结构复杂的仲醇也能高效氧化。