TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Disclosed): Cycloaddition of 4-pi-electron group compound and 2-pi-electron group compound is carried out, and cyclization is carried out by Diels-Alder reaction to obtain porphycene having bicyclo structure (1).Preferred Compound: The porphycene having bicyclo structure (1) is of formula (3), preferably of formula (6).R',R''=R 1,R 2;adjacent R'+R'=ring;M=two hydrogen atoms or metal atom optionally having substituent and/or ligand based on valency;at least one of C 3=C 4 coupling portion=structure of formula (4), and other C 3=C 4 coupling portion being -CH 2=CH 2- optionally having substituent;R'+R''=ring;andY'=carbon atom or nitrogen atom.Preferred Method: The porphycene (6) is converted to obtain porphycene having structure of formula (7). The porphycene is converted by reverse Diels-Alder reaction. EXAMPLE - 1,1'-Bis(4,7-ethano-4,7-dihydroisoindole) (in g) (1.02) was added to reaction container. Argon substitution was carried out. Methylene chloride (30 ml) and N,N-dimethyl formamide (10 ml) were added and dissolved. Phosphorus oxychloride was refluxed and solution was cooled to room temperature. Sodium acetate aqueous solution (30 ml) was refluxed, and organic layer and aqueous layer were separated after extraction. The organic layer was concentrated, washed and dried. 1,1'-bis(4,7-ethano-3-formyl-4,7-dihydroisoindole) (1.12) was obtained as yellow crystal at purity of 93%. Zinc powder (3.27) and copper chloride (I) (0.2) were added to reaction container and argon substitution was carried out. Tetrahydrofuran (170 ml) and titanium tetrachloride (2.74 ml) were added and refluxed. Tetrahydrofuran solution of obtained indole compound (0.34) was added and refluxed. The reaction solution was cooled and aqueous ammonia (100 ml) was added and stirred. The obtained solid was filtered, and organic layer and aqueous layer were separated. The organic layer was dried and concentrated. Benzo porphycene precursor (69 mg) having bicyclo structure was obtained at yield of 22%. The obtained precursor was added to microtube and heated at 200 degrees C for 30 minutes under vacuum to obtain 37,38,39,40-tetraazanonacyclo(28.6.1.12,9.112,19.120,27.03,8.013,18.021,26.031,36)tetraconta-1,3(8),4,6,9,11,13(18),14,16,19(39),20,22,24,26,30(37),31(36),32,34-octadecaene.