- A new alkyl substituted and method for the synthesis of polythiophene
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The invention provides a method for replacing multi-thiophthene with beta-dialkyl in a synthesis formula I. The method comprises the following steps of: (f) reacting an intermediate in a formula 10 to obtain an intermediate in a formula 11; (g) reacting the intermediate in the formula 11 to obtain an intermediate in a formula 12; (h) reacting the intermediate in the formula 12 to obtain an intermediate in a formula 13; (i) reacting the intermediate in the formula 13 to obtain an intermediate in a formula 8; (j) reacting the intermediate in the formula 8 to obtain an intermediate in a formula 9; and (k) reacting the intermediate in the formula 9 to obtain a compound in a formula I. The invention further relates to the intermediate in the formula 9. The method disclosed by the invention is low in cost, simple in process, high in yield and low in pollution. The formulas 10, 11, 12, 13, 8 and 9 are shown in the description.
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