Reaction SMILES: [CH2:1]([O:5][P:6]([C:13]1[CH:17]=[C:16]([C:18]2[S:19][C:20]([C:35]3[S:36][C:37]([C:40]4[S:41][C:42](I)=[CH:43][CH:44]=4)=[CH:38][CH:39]=3)=[C:21]([P:23]([O:30][CH2:31][CH2:32][CH2:33][CH3:34])([O:25][CH2:26][CH2:27][CH2:28][CH3:29])=[O:24])[CH:22]=2)[S:15][C:14]=1[C:46]1[S:50][C:49]([C:51]2[S:52][C:53](I)=[CH:54][CH:55]=2)=[CH:48][CH:47]=1)([O:8][CH2:9][CH2:10][CH2:11][CH3:12])=[O:7])[CH2:2][CH2:3][CH3:4].[CH2:57]([O:61][P:62]([C:69]1[CH:73]=[C:72]([C:74]2[S:75][C:76]([Sn](CCCC)(CCCC)CCCC)=[C:77]([P:79]([O:86][CH2:87][CH2:88][CH2:89][CH3:90])([O:81][CH2:82][CH2:83][CH2:84][CH3:85])=[O:80])[CH:78]=2)[S:71][C:70]=1[C:104]1[S:105][CH:106]=[CH:107][CH:108]=1)([O:64][CH2:65][CH2:66][CH2:67][CH3:68])=[O:63])[CH2:58][CH2:59][CH3:60].[F-].[K+]>C1(C)C=CC=CC=1.[Cu]Cl>[CH2:57]([O:61][P:62]([C:69]1[CH:73]=[C:72]([C:74]2[S:75][C:76]([C:53]3[S:52][C:51]([C:49]4[S:50][C:46]([C:14]5[S:15][C:16]([C:18]6[S:19][C:20]([C:35]7[S:36][C:37]([C:40]8[S:41][C:42]([C:20]9[S:19][C:18]([C:16]%10[S:15][C:14]([C:46]%11[S:50][CH:49]=[CH:48][CH:47]=%11)=[C:13]([P:6]([O:8][CH2:9][CH2:10][CH2:11][CH3:12])([O:5][CH2:1][CH2:2][CH2:3][CH3:4])=[O:7])[CH:17]=%10)=[CH:22][C:21]=9[P:23]([O:25][CH2:26][CH2:27][CH2:28][CH3:29])([O:30][CH2:31][CH2:32][CH2:33][CH3:34])=[O:24])=[CH:43][CH:44]=8)=[CH:38][CH:39]=7)=[C:21]([P:23]([O:30][CH2:31][CH2:32][CH2:33][CH3:34])([O:25][CH2:26][CH2:27][CH2:28][CH3:29])=[O:24])[CH:22]=6)=[CH:17][C:13]=5[P:6]([O:5][CH2:1][CH2:2][CH2:3][CH3:4])([O:8][CH2:9][CH2:10][CH2:11][CH3:12])=[O:7])=[CH:47][CH:48]=4)=[CH:55][CH:54]=3)=[C:77]([P:79]([O:86][CH2:87][CH2:88][CH2:89][CH3:90])([O:81][CH2:82][CH2:83][CH2:84][CH3:85])=[O:80])[CH:78]=2)[S:71][C:70]=1[C:104]1[S:105][CH:106]=[CH:107][CH:108]=1)([O:64][CH2:65][CH2:66][CH2:67][CH3:68])=[O:63])[CH2:58][CH2:59][CH3:60]
Reactant: CCCCOP(=O)(OCCCC)c1cc(-c2cc(P(=O)(OCCCC)OCCCC)c(-c3ccc(-c4ccc(I)s4)s3)s2)sc1-c1ccc(-c2ccc(I)s2)s1
Reactant: CCCCOP(=O)(OCCCC)c1cc(-c2cc(P(=O)(OCCCC)OCCCC)c([Sn](CCCC)(CCCC)CCCC)s2)sc1-c1cccs1
Agent: Cl[Cu]
Agent: [F-]
Agent: [K+]
Solvent: Cc1ccccc1
Product: CCCCOP(=O)(OCCCC)c1cc(-c2cc(P(=O)(OCCCC)OCCCC)c(-c3ccc(-c4ccc(-c5sc(-c6cc(P(=O)(OCCCC)OCCCC)c(-c7ccc(-c8ccc(-c9sc(-c%10cc(P(=O)(OCCCC)OCCCC)c(-c%11cccs%11)s%10)cc9P(=O)(OCCCC)OCCCC)s8)s7)s6)cc5P(=O)(OCCCC)OCCCC)s4)s3)s2)sc1-c1cccs1
Yield: 41 %

Procedure:
At room temperature, 0.0925 g (0.082 mmols) of 3″,4″′-bis(dibutoxyphosphoryl)-5,5″″′-diiodo-[2,2′;5′,2″; 5″,2″′;5″′,2″″;5″″,2″″′]-sexithiophene and 0.0076 g (0.0065 mmols) of commercially available tetrakistriphenylphosphine palladium were dissolved in 3 mL of toluene, to which 0.1508 g (0.16 mmols) of 3′,4″-bis(dibutoxyphosphoryl)-5″-(tributylstannyl)-[2,2′;5′,2″]-terthiophene and 0.0029 g (0.032 mmols) of commercially available copper(I) chloride were added at room temperature. Thereafter, the reaction mixture was heated and stirred under reflux for 2 hours. After the reaction, the reaction mixture was cooled down to room temperature, to which a potassium fluoride aqueous solution was added, followed by stirring for 1 hour. Subsequently, the solid was removed by celite filtration and the filtrate was extracted with ethyl acetate. The organic phase was washed with a saturated saline solution and dried over anhydrous sodium sulfate. The solvent was removed by distilling off under reduced pressure, and the resulting crude product was purified with a PTLC plate (developed with ethyl acetate:hexane=2:1 and ethyl acetate:hexane=3:1) to obtain the specified substance in the form of a red solid at a yield of 0.0720 g (yield: 41%).