提出了杂芳族N-甲苯磺酰基hydr与硫醇的无金属偶联。还显示了合成杂芳基N-甲苯磺酰基hydr的简便合成途径。以高收率合成了具有吡咯,吡啶,噻吩并[2,3- b ]吡啶,咪唑并[1,2- a ]吡啶和6 H-噻吩并[2,3- b ]吡咯衍生物的有价值的硫醚。该偶联反应可以一锅法进行,并且通过使用杂芳基醛而放大至克级,而无需分离N-甲苯磺酰zone。
Provided are dihydroisoxazole compounds I useful for controlling parasites both in animals and agriculture. Further provided are methods for controlling parasite infestations of an animal by administering an effective amount of a compound as described above, or a pharmaceutically acceptable salt thereof, to an animal, as well as formulations for controlling parasite infestations using the compounds described above or an acceptable salt thereof, and an acceptable carrier. Also provided are compounds and processes useful for making the dihydroisoxazole compounds.
Provided are dihydroisoxazole compounds I useful for controlling parasites both in animals and agriculture. Further provided are methods for controlling parasite infestations of an animal by administering an effective amount of a compound as described above, or a pharmaceutically acceptable salt thereof, to an animal, as well as formulations for controlling parasite infestations using the compounds described above or an acceptable salt thereof, and an acceptable carrier. Also provided are compounds and processes useful for making the dihydroisoxazole compounds.
wherein A is
Straightforward Synthesis of 2-Acetyl-Substituted Benzo[b]thiophenes
作者:Julien Debray、Florence Popowycz、Marc Lemaire
DOI:10.1055/s-0032-1317674
日期:——
Described herein is a green one-step protocol for the preparation of substituted 2-acetylbenzo[b]thiophenes from commercially available aromatic halides. This efficient method has the advantage of using water as the reaction medium, resulting in a high yield of pure cyclized products. Two scaffold types have been prepared using this general procedure: 2-acetylbenzo[b]thiophenes and 2-acetyl-3-aminobenzo[b]thiophenes, both crystallized directly from the reaction mixture, due to their low solubility with water, and without the need for an additional purification step.
Klemm,L.H.; Merril,R.E., Journal of Heterocyclic Chemistry, 1974, vol. 11, p. 355 - 361