1,1'-チオカルボニルジイミダゾール

説明1,1'-Thiocarbonyldiimidazole (TCDI) is an imidazole compound that can be prepared by reacting thiophosphoryl chloride with two corresponding imidazoles. Its structure has two imidazole rings, and the imidazole groups can be rapidly displaced, making it a safer alternative to thiophosphoryl chloride. TCDI is used as an organic synthesis or chemical reaction reagent for the synthesis of thiosemicarbazones and thioamides. It is also used in the Corey-Winter olefin synthesis and in the Barton-McCombie deoxygenation reaction. In addition, it is the sulfur analogue of the peptide addition reagent carbodiimidazole (CDI), which is used to couple peptides.

使用1,1'-Thiocarbonyldiimidazole is used as a reagent for the deoxygenation of alcohols with tributyltin hydride and diols with lithium aluminum hydride. It is also used to deoxygenate carboxylic monosaccharide analogues. Further, it is a useful reagent involved in biochemical synthesis. In addition to this, it is used to prepare 1-[bis-(4-methoxy-phenyl)-methyl]-1H-imidazole by reacting with 4,4'-dimethoxy-benzhydrol.

純化方法It forms yellow crystals on recrystallisation from tetrahydrofuran or by sublimation at 10-3torr (bath temperature 70-80o). It is hydrolysed by H2O and should be stored dry. [Staab & Walther Justus Liebigs Ann Chem 657 98 1962; Pullukat et al. Tetrahedron Lett 1953 1967, Hanessian et al. Can J Chem 65 1859 1987, Rajanbabu et al. J Am Chem Soc 111 1759 1989.] Thiochrome {2,7-dimethyl-5H -thiachromine-8-ethanol; 3,8-dimethyl-2-hydroxyethyl-5H -