Mo. Rev. Stat. § 473.330

In all cases of relinquishment of the interest of a decedent in real estate under sections 473.323 and 473.327 and in all cases of the sale of the interest of a decedent in real estate under sections 473.287 and 473.320, the executor or administrator may make the relinquishments by deed or may convey to the purchaser all the right, title and interest the testator or intestate had in and to the real estate at the time of his death. Before any relinquishment or sale referred to in this section is ordered by the court, the executor or administrator shall proceed on petition and notice the same as is required by this law for proceedings to sell real estate to pay debts for other purposes.