Photocatalytic Oxygenation of 10-Methyl-9,10-dihydroacridine by O<sub>2</sub> with Manganese Porphyrins
作者:Jieun Jung、Kei Ohkubo、David P. Goldberg、Shunichi Fukuzumi
DOI:10.1021/jp505860f
日期:2014.8.14
irradiation. The photocatalytic reactivity of (P)MnIII in the presence of O2 is in proportion to concentrations of AcrH2 or O2 with the maximum turnover numbers of 17 and 6 for 1 and 2, respectively. The quantum yield with 1 was determined to be 0.14%. Deuterium kinetic isotope effects (KIEs) were observed with KIE = 22 for 1 and KIE = 6 for 2, indicating that hydrogen-atom transfer from AcrH2 is involved
双氧 (O 2 ) 与锰卟啉 [(P)Mn III : 5,10,15,20-tetrakis-(2,4,6- )光催化氧化 10-甲基-9,10-二氢吖啶 (AcrH 2 )三甲基苯基)卟啉锰(III)氢氧化物[(TMP)Mn III (OH)] ( 1 )或5,10,15,20-四(五氟苯基)卟啉锰(III)乙酸盐[(TPFPP)Mn III (CH 3 COO)] ( 2 )]在可见光照射下,在氧饱和的苄腈 (PhCN) 溶液中产生 10-甲基-(9,10 H )-吖啶酮 (Acr=O)。(P)Mn III在 O 2存在下的光催化反应性与 AcrH 2或 O 2 的浓度成正比,1和2的最大周转数分别为 17 和 6 。与量子产率1被确定为0.14%。观察到氘动力学同位素效应 (KIE),其中1 的KIE = 22和2 的KIE = 6 ,表明来自 AcrH 2 的氢原子转移参与了光催