2-Iodo-3 thiophene

Thioindoxyl 2-substituted synthesis, 4, 892 synthesis, 4, 880, 894, 927 tautomerism, 4, 728 Benzo[6]thiophene, 4-hydroxy-synthesis, 4, 905, 928 Benzo[i>]thiophene, 5-hydroxy-synthesis, 4, 928 Benzo[i>]thiophene, 6-hydroxy-synthesis, 4, 928 Benzo[6]thiophene, 7-hydroxy-synthesis, 4, 928 Benzo[f>]thiophene, 2-iodo-synthesis, 4, 934 Benzo[f>]thiophene, 3-iodo-synthesis, 4, 934 Benzo[6]thiophene, 2-mercapto-synthesis, 4, 931 tautomerism, 4, 38 Benzo[6]thiophene, 3-mercapto-synthesis, 4, 931... 

The first example of alkylthiophene bromination was also demonstrated at that time. Methylthiophene which was obtained from coal tar as a mixture with toluene was reacted with bromine, and dibromo(methyl)thiophene separated from toluene. Its further bromination led to the synthesis of fully substituted tribromo(methyl) thiophene. 2-Iodo-5-methylthiophene was obtained by the same iodination procedure as iodothiophene. Deiodination with sodium allowed for the isolation of pure methylthiophene [80]. 

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