Reductive Desulfurization of Thiol acid Esters by Raney Nickel.II:Studies on the dicarbonicmonothiol acid esters

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Reductive desulfurization decompositions have been investigated on two series of following compounds:<BR>[A] Monothiol benzyl esters of succinic, phthalic, and telephthalic acids, and salicylic acid thiol benzyl ester.<BR>[B] Ethyl thiol benzyl diesters of succinic, phthalic, and telephthalic acids, and thiol benzyl ester of o-methoxybenzoic acid.<BR>The result indicated that the compounds of [B] series showed far greater yield in reductive product than those of [A] series.The cause of this difference may be explained that thiol ester groups in [A] series with intramolecular or intermolecular hydrogen bonding have difficulty to be adsorbed on the catalyst than those of [B] series having thiol groups without such hydrogen bonding.
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