Title of article :
Synthesis and characterizations of meso-disubstituted asymmetric porphycenes
Author/Authors :
Taneda، نويسنده , , Masatsugu and Tanaka، نويسنده , , Akihiro and Shimakoshi، نويسنده , , Hisashi and Ikegami، نويسنده , , Atsushi and Hashimoto، نويسنده , , Koichi and Abe، نويسنده , , Masaaki and Hisaeda، نويسنده , , Yoshio، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2013
Abstract :
A post-synthetic method has been developed to synthesize novel asymmetric porphycenes bearing two different substituents on the meso-positions. Nitration of 9-acetoxy-2,7,12,17-tetra-n-propylporphycene with AgNO3 in CH3COOH/CH2Cl2 occurs regioselectively at the 19-position of the macrocycle to give 9-acetoxy-19-nitro-2,7,12,17-tetra-n-propylporphycene (3a) which was readily converted to 9-acetoxy-19-amino-2,7,12,17-tetra-n-propylporphycene (4a) by the reduction with SnCl2 in pyridine.
Keywords :
Nitration , Optical properties , Asymmetric porphycenes , meso-Substitution , Acetoxylation
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
