Synthesis of <i>N</i>-Oxyureas by Substitution and Cope-Type Hydroamination Reactions Using <i>O</i>-Isocyanate Precursors
作者:Meredith A. Allen、Ryan A. Ivanovich、Dilan E. Polat、André M. Beauchemin
DOI:10.1021/acs.orglett.7b03288
日期:2017.12.15
Oxy-carbamate O-isocyanate precursors facilitate access to synthetically valuable N-oxyureas via substitution with amines. This work exploits the reactivity of suitable O-isocyanate precursors, identified by a thorough study highlighting the different reactivity of isocyanate masking groups. This led to bench-stable O-isocyanate precursors, offering improved versatility in the synthesis of N-oxyureas, and
氧代氨基甲酸酯O-异氰酸酯前体有助于通过用胺取代获得具有合成价值的N-氧脲。这项工作利用了合适的O-异氰酸酯前体的反应性,这是通过一项突出异氰酸酯掩蔽基团不同反应性的全面研究确定的。这导致了台式稳定的O-异氰酸酯前体,在N-含氧脲的合成中提供了改进的多功能性,并证明了掩蔽的O-异氰酸酯的受控反应性。合适的前体也使不饱和羟基脲的 Cope 型加氢胺化的第一个例子成为可能。