Synthesis and structure of a 5,15-bis(4-pyridyl)purpurin
摘要:
Base catalyzed cyclization of a 5,15-di(4-pyridyl)octaalkylporphyrin-5-acrylate 6 yields smoothly the corresponding purpurin 2. Quaternization with methyl iodide yielded the corresponding cationic N,N'-dimethylpyridiniumpurpurin 3; X-ray crystallography of purpurin 2, the first purpurin to be studied crystallographically, shows the two p-alkyl groups on the saturated ring of the purpurin have a syn configuration, and the macrocycle to have a slight saddle shape with a mean deviation of 0.230 Angstrom from the least-squares plane calculated for the core atoms.
DOI:
10.1016/0040-4039(95)01963-i
作为产物:
描述:
bis(acetylacetonate)nickel(II) 、 2,8,12,18-tetrabutyl-3,7,13,15-tetramethyl-5,15-bis(4-pyridyl)porphyrin 以
not given 为溶剂,
以90%的产率得到