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Helvetica Chimica Acta Vol. 86 (2003)
5,10,15,20-Tetrakis(3-methoxyphenyl)porphyrin (10): UV (Benzene): 418 (543), 518 (12.3), 550 (9.0), 589
(8.1), 650 (7.9). 1H-NMR(CDCl 3, 250 MHz): À2.79 (br. s, 2 NH); 3.97 (s, 4 MeO); 7.33 7.77 (m, 16 arom. H);
8.46 (s, 8 H (pyrrole)). Anal. calc. for C48H38N4O4: C 78.45, H 5.21, N 7.62; found: C 78.37, H 5.24, N 7.65.
5,10,15,20-Tetrakis(3-chlorophenyl)porphyrin (11): UV (Benzene): 418 (505), 518 (21), 550 (9.0), 588
1
(7.8), 650 (3.2). H-NMR(CDCl 3, 250 MHz): À2.96 (br. s, 2 NH); 7.40 7.82 (m, 12 arom. H); 8.11 (s, 4 Ho);
8.78 (s, 8 H (pyrrole)). Anal. calc. for C44H26Cl4N4: C 70.23, H 3.48, N 7.44; found: C 70.31, H 3.49, N 7.36.
5,10,15,20-Tetrakis(3-nitrophenyl)porphyrin (12): UV (Benzene): 418 (530), 480 (1.2), 515 (21.2), 550
(11.0), 591 (10.4), 646 (4.3). 1H-NMR(CDCl 3, 250 MHz): À2.96 (br. s, 2 NH); 8.13 8.70 (m, 16 arom. H); 8.93
(s, 8 H (pyrrole)). Anal. calc. for C44H26N8O4: C 66.49, H 3.30, N 14.10; found: C 66.38, H 3.27, N 14.22.
5,10,15,20-Tetrakis(2-methylphenyl)porphyrin (13). UV (Benzene): 418 (5567), 514 (13.2), 545 (4.6), 591
1
(9.7), 646 (3.2). H-NMR(CDCl 3, 250 MHz): À2.62 (br. s, 2 NH); 2.04 (s, 4 Me); 7.50 8.70 (m, 16 arom. H);
8.65 (s, 8 H (pyrrole)). Anal. calc. for C48H38N4: C 85.97, H 5.67, N 8.36; found: C 85.92, H 5.58, N 8.23.
5,10,15,20-Tetrakis(2-chlorophenyl)porphyrin (14): UV (Benzene): 418 (580), 482 (2.0), 515 (12.1), 550
1
(4.2), 590 (7.8), 643 (1.2). H-NMR(CDCl 3, 250 MHz): À2.74 (br. s, 2 NH), 7.55 8.01 (m, 16 arom. H); 8.61
(s, 8 H (pyrrole)). Anal. calc. for C44H26Cl4N4: C 70.23, H 3.48, N 7.44; found: C 70.34, H 3.38, N 7.51.
5,10,15,20-Tetrakis(2-nitrophenyl)porphyrin (15): UV (Benzene): 422 (529), 518 (9.7), 550 (7.1), 588 (4.6),
650 (2.3). 1H-NMR(CDCl 3, 250 MHz): 2.95 (br. s, 2 NH); 7.54 8.27 (m, 16 arom. H); 8.64 (s, 8 H (pyrrole)).
Anal. calc. for C44H26N8O4: C 66.49, H 3.30, N 14.10; found: C 66.53, H 3.41, N 14.06.
5,10,15,20-Tetrakis(2,4,6-trimethylphenyl)porphyrin (16): UV (Benzene): 418 (5.57), 480 (2.95), 514 (4.18),
547 (3.59), 590 (3.69), 647 (3.48), 650 (5.0). 1H-NMR(CDCl 3, 250 MHz): À2.57 (br. s, 2 NH); 1.77 (s, 8 o-Me);
2.53 (4 p-Me); 7.18 (s, 4 Hm); 8.5 (s, 8 H (pyrrole)). Anal. calc. for C56H54N4: C 85.90, H 7.00, N 7.20; found:
C 85.82, H 7.15, N 7.3.
We gratefully acknowledge the support of this work by the Shiraz University Research Council.
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Received August 24, 2002