Meso-octamethylporphyrinogen

Meso-octamethylporphyrinogen, usually referred to simply as octamethylporphyrinogen, is an organic compound with the formula (Me2C-C4H2NH)4 (Me = CH3. It is one of the simplest porphyrinogens, a family of compounds that occur as intermediates in the biosynthesis of hemes and chlorophylls. In contrast to those rings, porphyrinogens are colorless since they lack extended conjugation. The prefix meso-octamethyl indicates that eight methyl groups are located on the carbon centers that interconnect the four pyrrole rings. Also unlike porphyrins, the porphyrinogens are highly ruffled. The compound is made by condensation of pyrrole with acetone.[1]

Structure of octamethylporphyrinogen.[2]
Meso-octamethylporphyrinogen
Names
IUPAC name
5,5,10,10,15,15,20,20-octamethyl-21,22,23,24-tetrahydroporphyrin
Other names
octamethylcalix(4)pyrrole
Identifiers
3D model (JSmol)
365398
ChEBI
ChemSpider
ECHA InfoCard 100.152.255
EC Number
  • 623-589-1
2142403
Properties
C28H36N4
Molar mass 428.624 g·mol−1
Appearance white solid
Hazards
GHS pictograms
GHS Signal word Warning
H315, H319, H335
P261, P264, P271, P280, P302+352, P304+340, P305+351+338, P312, P321, P332+313, P337+313, P362, P403+233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

The pyrrolic N-H centers of ctamethylporphyrinogen can be deprotonated, and the resulting tetraanion functions as a tetradentate ligand for a variety of metal ions.[3]

References

  1. Sessler, Jonathan L.; Anzenbacher, Pavel Jr.; Miyaji, Hidekazu; Jursikova, Karolina; Bleasdale, Ellen R.; Gale, Philip A. (2000). "Modified Calix[4]pyrroles". Industrial & Engineering Chemistry Research. 39 (10): 3471–3478. doi:10.1021/ie000102y.
  2. Allen, William E.; Gale, Philip A.; Brown, Christopher T.; Lynch, Vincent M.; Sessler, Jonathan L. (1996). "Binding of Neutral Substrates by Calix[4]pyrroles". Journal of the American Chemical Society. 118 (49): 12471–12472. doi:10.1021/ja9632217.
  3. Bachmann, Julien; Hodgkiss, Justin M.; Young, Elizabeth R.; Nocera, Daniel G. (2007). "Ground- and Excited-State Reactivity of Iron Porphyrinogens". Inorganic Chemistry. 46 (3): 607–609. doi:10.1021/ic0616636. PMID 17256999.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.