Sterically hindered α-azido carbonyls: Mild and efficient synthetic method of α-azido carbonyl derivatives has been established using the nucleophilic α-azidation of α-halohydroxamates. The reaction of TMSN₃ with various α-mono- and disubstituted α-halohydroxamates using TBAF as a catalyst produced a wide range of hindered α-azido carbonyl derivatives in good yields.

中文翻译：

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α-卤代异羟肟酸酯与叠氮三甲基硅烷的无金属亲核α-叠氮化

空间位阻 α-叠氮羰基化合物：使用 α-卤代异羟肟酸酯的亲核 α-叠氮化反应建立了温和有效的 α-叠氮羰基衍生物合成方法。TMSN ₃与各种 α-单取代和二取代的 α-卤代异羟肟酸酯使用 TBAF 作为催化剂的反应以良好的收率产生了范围广泛的受阻 α-叠氮羰基衍生物。