[C:1]([C:3]1[CH:8]=[CH:7][C:6](B(O)O)=[CH:5][CH:4]=1)#[N:2].[CH2:12]([S:19][C:20]1[CH:25]=[CH:24][C:23](Br)=[CH:22][CH:21]=1)[CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18].C(=O)([O-])[O-].[Na+].[Na+]>C1(C)C=CC=CC=1>[C:1]([C:3]1[CH:8]=[CH:7][C:6]([C:23]2[CH:24]=[CH:25][C:20]([S:19][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH3:18])=[CH:21][CH:22]=2)=[CH:5][CH:4]=1)#[N:2]4-Cyanophenylboronic acid (7 g, 0.0476 m) was stirred and refluxed for 60 hours under nitrogen with 4-n-heptylthiobromobenzene (12.4 g, 0.0433 m), TTPP (0.9 g, 0.000783 m), 2 molar aqueous sodium carbonate (41 mls). toluene (86 mls) and industrial methylated spirit (20.5 mls). The mixture was then separated and extincted with toluene (2×100 mls) washed with water (100 mls) and dried over magnesium sulphate. The solvents were then evaporated off to give a brown solid products which was purified by column chromatography and recrystallisation from industrial methylated spirit. 4-Cyano-4'-heptylthiobiphenyl was produced (4.1 g, 100% HPCL, 30% yield melting point 64.4° C.).
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