Direct guanylation of amino groups by cyanamide in water: Catalytic generation and activation of unsubstituted carbodiimide by scandium(iii) triflate

Kazuki Tsubokura, Takayuki Iwata, Misako Taichi, Almira Kurbangalieva, Koichi Fukase, Youichi Nakao, Katsunori Tanaka

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    11 Citations (Scopus)


    Guanylation proceeded efficiently upon treatment of the various amines with cyanamide in the presence of catalytic amounts of scandium(III) triflate under mild conditions. The method did not require the guanylation reagents to be preactivated, and the reaction proceeded efficiently in water. The method, therefore, has practical utility for substrates that dissolve only in aqueous solutions, for example, peptides or pharmacologically important compounds.

    Original languageEnglish
    Pages (from-to)1302-1306
    Number of pages5
    Issue number9
    Publication statusPublished - 2014



    • activated carbodiimide
    • cyanamide
    • guanylation

    ASJC Scopus subject areas

    • Organic Chemistry

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