Four-Atom-Linked Capped Porphyrins: Synthesis and Characterization
摘要:
Three new capped porphyrins, H-2(OC(2)OPor) (7), H-2(OC(CO)NPor) (13), and H-2(OC(2)NPor) (14), to be used as heme model compounds, have been synthesized and characterized. These compounds have the shortest linkages between cap and porphyrin plane of any four-arm capped porphyrins synthesized to date. The general synthetic procedure for H-2(OC(2)OPor) involves the reaction of a tetraaldehyde ''cap'' with pyrrole to form the capped porphyrin. In the synthesis of the tetraamide-capped porphyrin, H-2(OC(CO)NPor), a tetraacid chloride cap is reacted with meso-alpha,alpha,alpha,alpha-tetra-(o-aminophenyl)porphyrin. The amide groups may be reduced to form H-2(OC(2)NPor). With the use of FeBr2, Fe2+ may be inserted in high yield into Ha(2)(OC(2)OPor) and H-2(OC(CO)NPor). The crystal structures of H-2(OC(2)NPor), Fe(OC(2)OPor)(OMe), and [Fe(OC(2)OPor)](2)(mu-O) provide details on the types and amounts of cap expansion necessary to accommodate small ligands of biological interest, such as O-2 and CO.
Johnson, Martin R.; Seok, Won K.; Ibers, James A., Journal of the American Chemical Society, 1991, vol. 113, # 10, p. 3998 - 4000
作者:Johnson, Martin R.、Seok, Won K.、Ibers, James A.
DOI:——
日期:——
JOHNSON, MARTIN R.;SEOK, WON K.;IBERS, JAMES A., J. AMER. CHEM. SOC., 113,(1991) N0, C. 3998-4000
作者:JOHNSON, MARTIN R.、SEOK, WON K.、IBERS, JAMES A.
DOI:——
日期:——
Four-Atom-Linked Capped Porphyrins: Synthesis and Characterization
作者:Martin R. Johnson、Won K. Seok、Wuping Ma、Carla Slebodnick、Keith M. Wilcoxen、James A. Ibers
DOI:10.1021/jo9521615
日期:1996.1.1
Three new capped porphyrins, H-2(OC(2)OPor) (7), H-2(OC(CO)NPor) (13), and H-2(OC(2)NPor) (14), to be used as heme model compounds, have been synthesized and characterized. These compounds have the shortest linkages between cap and porphyrin plane of any four-arm capped porphyrins synthesized to date. The general synthetic procedure for H-2(OC(2)OPor) involves the reaction of a tetraaldehyde ''cap'' with pyrrole to form the capped porphyrin. In the synthesis of the tetraamide-capped porphyrin, H-2(OC(CO)NPor), a tetraacid chloride cap is reacted with meso-alpha,alpha,alpha,alpha-tetra-(o-aminophenyl)porphyrin. The amide groups may be reduced to form H-2(OC(2)NPor). With the use of FeBr2, Fe2+ may be inserted in high yield into Ha(2)(OC(2)OPor) and H-2(OC(CO)NPor). The crystal structures of H-2(OC(2)NPor), Fe(OC(2)OPor)(OMe), and [Fe(OC(2)OPor)](2)(mu-O) provide details on the types and amounts of cap expansion necessary to accommodate small ligands of biological interest, such as O-2 and CO.
Capped-porphyrin precursors
作者:P. G. Jene、D. S. Chan、B. L. Cooke、J. A. Ibers
DOI:10.1107/s0108270198018034
日期:1999.5.15
In the crystalline state, 2-[3-(tosyloxy)propoxy]benzaldehyde [(I), C17H18O5S] exists in a U-shaped conformation. The benzaldehyde and toluene rings are nearly parallel. Crystals of 2-[2(tosyloxy)ethoxy]benzaldehyde occur with two habits. The X-ray structure determinations of these habits reveal an anhydrous form [(II), C16H16O5S] and a hemihydrated form [(III), C16H16O5S.0.5H(2)O] In (III), a water molecule bridges two carbonyl functions [O6...O1 2.87 (1) Angstrom] 1,2,4,5-Tetrakis2-[2-(1,3-dioxolan-2-yl)phenoxy]ethoxy}benzene [(IV), C50H54O16] was prepared by protecting the aldehyde function of (II) or (III) with ethylene glycol and reacting the resulting compound, with 1,2,4,5-tetrahydroxybenzene. Compound (IV) has (1) over bar symmetry.