@article {2332, title = {Facile Synthesis of Unsubstituted beta,beta {\textquoteright}-Linked Diformyldipyrromethanes}, journal = {Journal of Organic Chemistry}, volume = {73}, number = {23}, year = {2008}, note = {ISI Document Delivery No.: 378JDTimes Cited: 2Cited Reference Count: 31Zhang, Zhan Shin, Ji-Young Dolphin, David}, month = {Dec}, pages = {9515-9517}, type = {Article}, abstract = {Unsubstituted beta,beta{\textquoteright}-linked diformyldipyrromethanes are promising precursors for the synthesis of novel poly dipyrromethene ligands and N-confused porphyrins. A strategy has been developed to selectively synthesize unsubstituted beta,beta{\textquoteright}-linked diformyldipyrromethanes in moderate yields starting from 2-formylpyrrole.}, keywords = {ACETALS, BUILDING-BLOCKS, CHEMISTRY, COMPLEXES, ISOMER, MESOSUBSTITUTED DIPYRROMETHANES, N-confused porphyrin, SALTS, SUBSTITUENTS, supramolecular, TETRAPYRROLE}, isbn = {0022-3263}, url = {://000261316100052}, author = {Zhang, Z. and Shin, J. Y. and Dolphin, D.} } @article {553, title = {Facile synthesis of N,N {\textquoteright}-dimethylated N-confused porphyrins}, journal = {Tetrahedron}, volume = {58}, number = {44}, year = {2002}, note = {ISI Document Delivery No.: 608QCTimes Cited: 4Cited Reference Count: 8}, month = {Oct}, pages = {9111-9116}, type = {Article}, abstract = {N-Confused tetraarylporphyrins react with CH3I in the presence of Na2CO3 to give, in high yield, N,N{\textquoteright}-dimethylated N-confused porphyrin salts, which are mixtures of structural isomers. The structures of the major isomers were determined by X-ray diffraction and NMR spectroscopic analyses. These N,N{\textquoteright}-dimethylated N-confused tetraarylporphyrin salts generate singlet oxygen when irradiated at long wavelengths in the visible region, and therefore, are potential sensitizers for photodynamic therapy. (C) 2002 Elsevier Science Ltd. All rights reserved.}, keywords = {ISOMER, METHYLATION, N, N {\textquoteright}-dimethylated N-confused porphyrin, N-confused porphyrin, RING, singlet oxygen, TETRAPHENYLPORPHYRIN}, isbn = {0040-4020}, url = {://000178857300026}, author = {Xiao, Z. W. and Dolphin, D.} }