Common methods available for the preparation of useful porphyrins from naturally derived heme and by total synthesis from monopyrroles are presented. Such porphyrins can be used for numerous reactivity and structural modification studies of the type which will be presented in minisymposia (including
Syntheses and Chemistry of Bis- and Tris-mercaptoborates
β Scribed by Sheldon G. Shore; Ewan J. M. Hamilton; Roman G. Kultyshev; Hoitung T. Leung; Teshome Yisgedu
- Publisher
- John Wiley and Sons
- Year
- 2006
- Weight
- 8 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0931-7597
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π SIMILAR VOLUMES
## Abstract The syntheses, spectroscopic characterizations, and Xβray structures of two new N,P,Nβligands **1** and **2** are described. These ligands are based on a central 2,5βsubstituted phosphole ring and have, respectively, two 4βpyridyl moieties, or one 4βpyridyl moiety and one 2βpyridyl moie
gives yellow needles, m.p. 322--324 "C (from n-butanol), Amax (in chloroform): 242 my (log E = 4.59), 275 (4.47), 31 5 (shoulder), 368 (shoulder); broad band with indistinct structure at 405 my (log E = 4.10). It dissolves in conc. HlS04 to give a carmine-red solution, A , , , , (in H2SO4): 251 mp (