Nucleophilic Ring Opening of <i>meso</i>-Substituted 5-Oxaporphyrin by Oxygen, Nitrogen, Sulfur, and Carbon Nucleophiles
作者:Kazuhisa Kakeya、Masakatsu Aozasa、Tadashi Mizutani、Yutaka Hitomi、Masahito Kodera
DOI:10.1021/jo5000412
日期:2014.3.21
Nucleophilic ring opening of 23H-[21,23-didehydro-10,15,20-tris(4-methoxycarbonylphenyl)-5-oxaporphyrinato](trifluoroacetato)zinc(II) with various nucleophiles such as alkoxide, amine, thiolate, and enolate gave 19-substituted bilinone zinc complexes, and they were isolated as free base bilinones. An X-ray crystallographic study demonstrated that the product of 5-oxaporphyrin with sodium methoxide
23 H- [21,23-didehydro-10,15,20-三(4-甲氧羰基苯基)-5-氧杂卟啉酮](三氟乙酰基)锌(II)的亲核开环,具有各种亲核试剂,例如醇盐,胺,硫醇盐和烯醇盐得到19-取代的双亚麻酮锌络合物,它们被分离为游离碱胆汁。X射线晶体学研究表明,5-氧杂卟啉与甲醇钠的产物为21 H,23 H-(4 Z, 9 Z, 15 Z)-1,21-dihydro-19-methoxy-5,10,15 -三(4-甲氧基羰基苯基)胆碱-1-酮具有螺旋构象。5-氧杂卟啉与乙酰乙酸乙酯的烯醇化物的产物结构为21 H,22 H,24H-(4 Z, 9 Z, 15 Z, 19 E)-19-(1-乙氧羰基-2-氧代亚丙基)-5,10,15-三(4-甲氧羰基苯基)-1,19,21,24-四氢比林-1-一个,带有三个内部NH基团。带有SH –的产物也是相同的互变异构体,21 H,22 H,24 H