ChemInform Abstract: Reactions of the Derivatives of (Diphenylmethyleneamino)acetic Acid with Carbon Disulfide and Phenyl Isothiocyanate and Crystal and Molecular Structure of Methyl 2-(Diphenylmethyleneamino)-2-(1,3-dithiane-2-ylidene) Acetate.
Abstract
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ChemInform Abstract
Derivatives of (diphenylmethyleneamino)acetic acid such as (I) and (VII) react with CS2 (II) in the presence of base or under phase transfer conditions to give corresponding ketene thioacetals of types (IV), (VI), (VIII), and (IX) after alkylation. Phenyl isothiocyanate (X) and dicyclohexylcarbodiimide (XV) give rise to ketene-S,N-acetals such as (XII), (XIII), (XIV), and N,N-acetals, e.g. (XVI). The structure of the thioacetal (VI) is determined by X-ray analysis.
