Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5220552 | Tetrahedron | 2011 | 6 Pages |
Abstract
We report an in-depth study on meso-aryl nitration of tetraphenylporphyrin. In contrast to previous studies, new evidence reveals that tetrakis(p-nitrophenyl) derivative can be obtained as a major product. Successful isolation of the barely soluble product toward a remarkable yield of nearly 90% has been reached by means of a solid phase extraction technique. Distribution of different nitro-porphyrin components is reassessed with respect to varying acid content in the reactions. An ortho-effect model is proposed to describe the formation mechanism.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Zhi Xue, Priscilla P.S. Lee, Yanming Wang, Daniel W.J. Kwong, Jing Li, John H. Xin, Wai-Kwok Wong, Kevin K.L. Cheuk,