Characterization of a new meso-aryl rubyrin isomer: [26]hexaphyrin (1.1.1.0.1.0) with an inverted heterocyclic ring
作者:Simi, K Pushpan、Venkataramana Rao G Anand、Sundararaman Venkatraman、Alagar Srinivasan、Akhilesh K Gupta、Tavarekere K Chandrashekar
DOI:10.1016/s0040-4039(01)00451-8
日期:2001.5
The synthesis and characterization of new aromatic 26π macrocycles obtained from the acid catalyzed 4+3 coupling reaction of core modified tripyrrane and tetrapyrrane are described.
描述了由酸改性的核心三吡喃与四吡喃的4 + 3偶联反应获得的新型芳族26π大环的合成与表征。
30π Aromatic Meso-Substituted Heptaphyrin Isomers: Syntheses, Characterization, and Spectroscopic Studies
作者:Venkataramanarao G. Anand、Simi K. Pushpan、S. Venkatraman、Seenichamy Jeyaprakash Narayanan、Abhishek Dey、Tavarekere K. Chandrashekar、Raja Roy、Bhavani S. Joshi、S. Deepa、G. Narahari Sastry
DOI:10.1021/jo025788d
日期:2002.9.1
bithiophene unit or in the tripyrrane unit. Theoretical calculations performed on three different heptaphyrins, 4, 5, and 17, also reveal that the inverted structures are approximately 35-40 kJ lower in energy relative to the corresponding noninverted structures. Furthermore, one of the heptaphyrins 10c shows the presence of two conformers in solution in the ratio 1:2 and no interconversion between the conformers
Meso Aryl Heptaphyrins: The First 30π Aromatic Expanded Porphyrins with an Inverted Structure
作者:Venkataramana Rao. G. Anand、Simi K. Pushpan、Alagar Srinivasan、Seenichamy Jeyaprakash Narayanan、Bashyam Sridevi、Tavarekere K. Chandrashekar、Raja Roy、Bhavani S. Joshi
DOI:10.1021/ol000251c
日期:2000.11.1
[reaction: see text] Synthesis of new meso aryl 30pi heptaphyrins 2, 3, and 4 is achieved. Spectroscopic studies reveal that 2, 3, and 4 are aromatic and possess an inverted structure.