This paper is a summary of the lecture Michael Hanack gave at the 5th ICPP meeting in Moscow. A new method for the preparation of phthalonitriles is reported which makes the syntheses of substituted phthalocyanines much easier. Then the generation of highly reactive dehydrophthalocyanines using different methods is described. The reaction of these intermediates with dienophiles and various solvents is also discussed. In the last section, the syntheses of tetra- and octa-Zn phthalocyanine and -naphthalocyanine carbohydrate conjugates, which will be used for photosensitizers in PDT, is reported.