| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing an organic coloring matter MK-2 in a short period of time and in a good yield.SOLUTION: The method for producing an organic coloring matter MK-2 comprises: a first step of coupling 3-hexylthiophene in the presence fo an iodine catalyst and an activator to synthesize a thiophene dimer having two thiophene molecules bonded (H-T bithiophene); a second step of halogenating a 5-position of the resultant H-T bithiophene; a third step of substituting halogen at a 5-position of the resultant halogenated H-T bithiophene with a 9-ethylcarbazolyl group; a fourth step of halogenating a 5'-position of the resultant 9-ethylcarbazolyl H-T bithiophene; a fifth step of bonding H-T bithiophene to the resultant halogenated body to form a thiophene tetramer; a sixth step of folmylating a thiophene terminal of the resultant thiophene tetramer; and a seventh step of reacting the resultant formylated body with a cyanoacetic acid to produce the MK-2. |
