| http://www.w3.org/ns/prov#value | - The substitution reaction can be carried out in the same manner as the case of the aforementioned production method A. It is desirable to carry out the reaction in a solvent such as acetonitrile or the like in the presence of an organic base when X is NR2, or in a solvent such as DMF or the like in the presence of a metal salt base when X is O or S. Regarding the hydrolysis, when R6 is nitrile gro
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