Reaction of 1,3-Bis(het)arylmonothio-1,3-diketones with Sodium Azide: Regioselective Synthesis of 3,5-Bis(het)arylisoxazoles via Intramolecular N–O Bond Formation
作者:Mary Antony P、Gantala L. Balaji、Pethaperumal Iniyavan、Hiriyakkanavar Ila
DOI:10.1021/acs.joc.0c02216
日期:2020.12.4
An efficient new synthesis of 3,5-bis(het)arylisoxazoles, involving the reaction of 1,3-bis(het)arylmonothio-1,3-diketones with sodium azide in the presence of IBX catalyst, has been reported. The reaction proceeds at room temperature in high yields and is applicable to a broad range of substrates including the synthesis of 5-methyl-3-arylisoxazoles, a key subunit present in several β-lactamase-resistant
据报道,在IBX催化剂存在下,一种有效的新的3,5-双(杂)芳基异恶唑合成涉及1,3-双(杂)芳基单硫-1,3-二酮与叠氮化钠的反应。该反应在室温下以高收率进行,适用于多种底物,包括5-甲基-3-芳基异恶唑的合成,5-甲基-3-芳基异恶唑是几种抗β-内酰胺酶的抗生素中存在的关键亚基。已经提出了形成异恶唑的可能机理。还通过使相应的1-(杂)芳基-1-(甲硫基)-4-(杂)亚芳基-丁-1-烯-反应而合成了一些5-苯乙烯基/芳基丁二烯基-3-(杂)芳基异恶唑。在较高温度下与叠氮化钠共3个。β-酮二硫酯与叠氮化钠的反应显示出可提供高产率的β-酮腈。