An Optimised Synthesis of 2-[2,3-Bis(tert-butoxycarbonyl)guanidino]ethylamine

[摘要]：This short report describes an improved, reliable, and high-yielding (>90%) synthesis of 2-[2,3-bis(tert-butoxycarbonyl) guanidino] ethylamine. The method is scalable (>5 g), and the product obtained directly from the reaction mixture requires no further purification. In addition, this methodology can be successfully applied to other diamine substrates (1,3-propyl and 1,4-butyl; 70% and 61% yield, respectively).

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