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All articles of this category Bis(methoxycarbonyl)carbene, generated by the copper(II)-catalyzed fragmentation of 2,5-dichlorothiophenium-1-bis(methoxycarbonyl) methylide (3) undergoes rapid and efficient insertion into the N-H bonds of primary and secondary amines to generate N -substituted aminomalonic esters in good to excellent yields.
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Husinec et al. (1988) studied this question.
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