Cascade Formation of Isoxazoles: Facile Base-Mediated Rearrangement of Substituted Oxetanes
作者:Johannes A. Burkhard、Boris H. Tchitchanov、Erick M. Carreira
DOI:10.1002/anie.201100260
日期:2011.5.27
Give me five! Nitro compounds and oxetan‐3‐one react through an intriguing cascade sequence to give isoxazole‐4‐carbaldehydes using inexpensive reagents in a one‐pot procedure (see scheme; Ms=methanesulfonyl). A variety of 3‐substitutedisoxazole‐4‐carbaldehydes were obtained in high overall yields.
击个掌!硝基化合物和oxetan-3-one通过一个有趣的级联序列反应,使用便宜的试剂在单锅法中制得异恶唑4-甲醛(见方案; Ms =甲磺酰基)。以高总收率获得了各种3-取代的异恶唑-4-甲醛。
Petrov,V.P. et al., Doklady Chemistry, 1968, vol. 178, p. 113 - 115
作者:Petrov,V.P. et al.
DOI:——
日期:——
Silver comes into play: Henry reaction and domino cycloisomerisation sequence catalysed by [Ag(<scp>i</scp>)(Pc-L)] complexes
The Ag(i) complexes of pyridine-containing ligands with an active pendant arm are new catalysts for an old reaction: the nitroaldol condensation. When the substrates are 2-alkynylarylaldehydes, a smart cascade cycloisomerisation process can occur.