azide were accessed in a ‘one pot’ batch procedure using shelf stable, readily available reagents. For large scale diazo transfer reactions tosyl azide was generated and used in a telescoped flow process, to mitigate the risks associated with handling potentially explosive reagents on scale. The in situ formed tosyl azide was used to rapidly perform diazo transfer to a range of acceptors, including
产生了对热和冲击敏感的
甲苯磺酰基
叠氮化物,并按需将其用于伸缩的重氮转移过程中。使用易于保存且易于保存的稳定试剂,通过“一锅”分批操作获得了少量的
甲苯磺酰基
叠氮化物。对于大规模的重氮转移反应,生成
甲苯磺酰
叠氮化物并将其用于伸缩流动过程中,以减轻与大规模处理潜在爆炸性试剂相关的风险。在原位形成的
甲苯磺酰基
叠氮化物用于快速重氮转移至一系列受体,包括β-
酮酸酯,β-酮酰胺,
丙二酸酯和β-酮砜。还开发了一种有效的在线磺酰
叠氮化物淬灭方法,从而牺牲性受体分子可确保完全消耗掉所有残留的有害重氮转移试剂。采用在线猝灭的伸缩式重氮转移工艺,无需任何柱色谱法即可安全地制备超过21 g纯度> 98%的α-重氮羰基。