Allenols versus Allenones: Rhodium-Catalyzed Regiodivergent and Tunable Allene Reactivity with Triazoles
作者:Benito Alcaide、Pedro Almendros、Sara Cembellín、Teresa Martínez del Campo、Guillermo Palop
DOI:10.1002/chem.201702468
日期:2017.10.4
2‐Pyrrolines and 6‐oxo‐hexa‐2,4‐dienals have been prepared through the divergent reactions of 1‐benzenesulfonyl‐4‐aryl‐1,2,3‐triazoles with functionalized allenes. The rhodium‐catalyzed reactions between allenols and 1‐benzenesulfonyl‐4‐aryl‐1,2,3‐triazoles yielded 2‐pyrrolines. This transformation is compatible with the presence of aliphatic, aromatic, heterocyclic, amide, and halogen functional groups
通过1-苯磺酰基-4-芳基1,2,3-三唑与官能化的异戊烯的发散反应制备了2-吡咯啉和6-氧代己基2,4-二烯。烯丙醇与1-苯磺酰基-4-芳基1,2,3-三唑之间的铑催化反应产生2-吡咯啉。该转化与脂族,芳族,杂环,酰胺和卤素官能团的存在相容。有趣的是,当丙二烯系链的醇底物被其对应的酮替代时,发生了反应性转换。当1-苯磺酰基-4-苯基1,2,3-三唑与铑进行铑催化的反应时,无环6-氧化羰基-6,2,4二烯立体选择性地形成为(2 Z,4 E)异构体。