Related Products of 3405-77-4, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 3405-77-4, Name is 5-Methylisoxazole-3-carboxylic acid,introducing its new discovery.
Investigations of Pd(II)-catalyzed, picolinamide-assisted, gamma-C(sp2)-H activation and Z-selective arylation of allylamines are reported. The reactions of N-allylpicolinamides with various aryl iodides in the presence of the catalyst Pd(OAc)2 and additive AgOAc have led to the selective gamma-arylation of allylamines to construct various cinnamylamines with moderate to good yields and good to high E/Z ratios. To obtain good E/Z ratios, the Pd(II)-catalyzed arylation reaction of N-allylpicolinamides was probed using different additives, directing groups, and reaction conditions. The Pd(II)-catalyzed arylation of an allylamine containing both gamma-C(sp2)-H and gamma-C(sp3)-H bonds afforded moderate yields of the gamma-C(sp2)-H and gamma-C(sp3)-H bisarylated cinnamylamines. Although Heck-type gamma-arylations of allylamines have generally afforded the E-cinnamylamines, the bidentate directing group picolinamide-directed arylations of allylamines were found to be Z-selective. A plausible mechanism was proposed for the observed regioselectivity and Z-selective arylation of N-allylpicolinamides. Additionally, the Pd(II)-catalyzed arylation of an N-allyl-5-methylisoxazole-3-carboxamide afforded the E-cinnamylamines plausibly via a ligand-free Heck-type reaction mechanism.
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Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem