Mild Synthesis of Substituted 1,2,5-Oxadiazoles Using 1,1′-Carbonyldiimidazole as a Dehydrating Agent
作者:Andrew J. Neel、Ralph Zhao
DOI:10.1021/acs.orglett.8b00568
日期:2018.4.6
variety of 3,4-disubstituted 1,2,5-oxadiazoles (furazans) from the corresponding bisoximes at ambient temperature. This method enables these inherently energetic compounds to be prepared at temperatures well below their decomposition points and with improved functional group compatibility relative to prior methods. Conditions were developed that allowed for the first high-yielding synthesis of chlorofurazans
发现1,1'-羰基二咪唑在环境温度下可诱导由相应的双肟形成各种3,4-二取代的1,2,5-恶二唑(呋喃丹)。该方法使这些固有的高能化合物能够在远低于其分解点的温度下制备,并且相对于现有方法具有改进的官能团相容性。已开发出条件,可以从它们的氨基对应物首次高产地合成氯呋喃,从而能够温和地合成这些杂环。