The present invention relates to 3,4-difluoro-2-alkylaromatics and 2,4-difluoro-3-alkylaromatics, to a process for their preparation and to their use for preparing active ingredients.
The present invention provides compounds that modulate the activity of Janus kinases and are useful in the treatment of diseases related to activity of Janus kinases including, for example, immune-related diseases, skin disorders, myeloid proliferative disorders, cancer, and other diseases.
Catalytic Asymmetric Hydroalkoxylation and Formal Hydration and Hydroaminoxylation of Conjugated Dienes
作者:Shao-Qian Yang、Ai-Jun Han、Yang Liu、Xin-Yuan Tang、Guo-Qiang Lin、Zhi-Tao He
DOI:10.1021/jacs.2c11843
日期:——
realize transition-metal-catalyzed enantioselective C–O bond constructions via hydrofunctionalization of conjugated dienes. Here, we perform a comprehensive studytoward the stereoselective formal hydration and hydroaminoxylation of conjugated dienes by synthesizing a set of new P,N-ligands and identifying an aryl-derived oxime as a surrogate for both water and hydroxylamine. Asymmetric hydroalkoxylation
An efficient synthesis of highly functionalized chiral lactams
作者:Martha A. Ornelas、Javier Gonzalez、Neal W. Sach、Paul F. Richardson、Kevin D. Bunker、Angelica Linton、Susan E. Kephart、Mason Pairish、Chuangxing Guo
DOI:10.1016/j.tetlet.2011.07.021
日期:2011.9
A new method was developed to synthesize highly functionalized lactams via a one pot reductive amination/lactam formation reaction. This methodology is amenable for parallel synthesis and was used to prepare a large number of lactam analogs in a library format with good ee (de) retention. (C) 2011 Elsevier Ltd. All rights reserved.