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A convenient transformation of N-substituted ureas into N-(t-butoxycarbonyl) amines using a copper (II) salt-lithium t-butoxide system

J Yamaguchi, Y Shusa, T Suyama

文献索引：Yamaguchi, Jun-ichi; Shusa, Yuji; Suyama, Takayuki Tetrahedron Letters, 1999 , vol. 40, # 47 p. 8251 - 8254

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被引用次数: 8

摘要

Treatment of N-substituted ureas with a copper (II) reagent prepared from lithium t-butoxide and copper (II) halide led to give the corresponding N-(t-butoxycarbonyl) amines under mild conditions. On the contrary, no reaction of N, N-disubstituted ureas proceeded. Under the conditions the generation of azodicarbonyldiamide derivatives is expected. Further treatment of azodicarbonyldiamide derivatives with the copper (II) reagent also proceeded ...