Synthesis and self-assembly of a novel tetrapyrrole containing dipyrrin units linked at the 3,3′-positions
摘要:
A novel ligand comprising two dipyrrin units linked by a CH2 spacer at the 3-position has been synthesized and used to prepare a double-stranded helical assembly. Its structure was confirmed by X-ray analysis. A new approach to 3,3'-linked dipyrromethanes with CH2 as the spacer is also reported. (C) 2000 Elsevier Science Ltd. All rights reserved.
Synthesis and self-assembly of a novel tetrapyrrole containing dipyrrin units linked at the 3,3′-positions
作者:Yi Zhang、Zheming Wang、Chunhua Yan、Genpei Li、Jinshi Ma
DOI:10.1016/s0040-4039(00)01305-8
日期:2000.9
A novel ligand comprising two dipyrrin units linked by a CH2 spacer at the 3-position has been synthesized and used to prepare a double-stranded helical assembly. Its structure was confirmed by X-ray analysis. A new approach to 3,3'-linked dipyrromethanes with CH2 as the spacer is also reported. (C) 2000 Elsevier Science Ltd. All rights reserved.
Dinuclear Zinc(II) Double-Helicates of Homochirally Substituted Bis(dipyrromethene)s
作者:Tabitha E. Wood、Avena C. Ross、Nathan D. Dalgleish、Erin D. Power、Alison Thompson、Xiaoming Chen、Yoshio Okamoto
DOI:10.1021/jo051727e
日期:2005.11.1
A series of bis(dipyrromethene)s substituted with aromatic amide and aliphatic ester homochiral auxiliaries have been prepared and complexed with zinc(II) ions to form double-helical dinuclear complexes. CD analysis of the crude complexes revealed that the helicates formed in a diastereo-selective manner. The helicates have been resolved into their constituent M and P helices by HPLC, indicating that the helical sense of the complexes is stable to racemization.
Stereochemically Stable Double-Helicate Dinuclear Complexes of Bis(dipyrromethene)s: A Chiroptical Study
作者:Tabitha E. Wood、Nathan D. Dalgleish、Erin D. Power、Alison Thompson、Xiaoming Chen、Yoshio Okamoto
DOI:10.1021/ja0500613
日期:2005.4.1
Helical zinc(II) complexes of bis(dipyrromethene)s bearing homochiral amide substituents were synthesized. Analysis of the products by chiral HPLC showed two diastereomeric major products and showed that dipyrromethene double-nuclear helicates are stereochemically stable and do not interconvert. Circular dichroism (CD) studies showed that the complexation reactions had proceeded with modest diastereomeric excesses. Analysis of an analogous symmetric zinc(II) bis(dipyrromethene) lacking homochiral substituents that could act as chromophores discounted induced CD by the chiral auxiliaries.
SYNTHESIS OF NOVEL TETRAPYRROLES AND THEIR ZINC COMPLEXES