Metal-Free Chlorodeboronation of Organotrifluoroborates
摘要:
A mild and metal-free method for the chlorodeboronation of organotrifluoroborates using trichloroisocyanuric acid (TCICA) was developed. Aryl-, heteroaryl-, alkenyl-, alkynyl-, and alkyltrifluoroborates were converted into the corresponding chlorinated products in good yields. This method proved to be tolerant of a broad range of functional groups.
Room-Temperature Amination of Chloroheteroarenes in Water by a Recyclable Copper(II)-Phosphaadamantanium Sulfonate System
作者:Udaysinh Parmar、Dipesh Somvanshi、Santosh Kori、Aman A. Desai、Rambabu Dandela、Dilip K. Maity、Anant R. Kapdi
DOI:10.1021/acs.joc.1c00845
日期:2021.7.2
Buchwald–Hartwig amination of chloroheteroarenes has been a challenging synthetic process, with very few protocols promoting this important transformation at ambient temperature. The current report discusses about an efficient copper-based catalyticsystem (Cu/PTABS) for the amination of chloroheteroarenes at ambient temperature in water as the sole reaction solvent, a combination that is first to
Cu(II)/PTABS-Promoted, Regioselective S<sub>N</sub>Ar Amination of Polychlorinated Pyrimidines with Mechanistic Understanding
作者:Harshita Shet、Krishna Chaitanya Gunturu、Santosh J. Gharpure、Saidurga Prasad Kommyreddy、Krishna S. Gupta、Smruti Rekha Rout、Rambabu Dandela、Anant R. Kapdi
DOI:10.1021/acs.joc.3c01003
日期:2023.8.4
Regioselective amination of polyhalogenated heteroarenes (especially pyrimidines) has extensive synthetic and commercial relevance for drug synthesis applications but is plagued by the lack of effective synthetic strategies. Herein, we report the Cu(II)/PTABS-promoted highly regioselective nucleophilic aromatic substitution (SNAr) of polychlorinated pyrimidines assisted by DFT predictions of the bond
多卤杂芳烃(尤其是嘧啶)的区域选择性胺化对于药物合成应用具有广泛的合成和商业相关性,但由于缺乏有效的合成策略而受到困扰。在此,我们报告了 Cu(II)/PTABS 促进的多氯嘧啶的高度区域选择性亲核芳香取代 (S N Ar),并通过 DFT 预测不同 C-Cl 键的键解离能。Cu(II)-PTABS 的独特反应性归因于已知在这些反应中起作用的配位/活化机制,但也提供了对催化物质的进一步见解。
Compounds that interact with the Ras superfamily for the treatment of cancers, inflammatory diseases, rasopathies, and fibrotic disease
申请人:Shy Therapeutics LLC
公开号:US11026930B1
公开(公告)日:2021-06-08
Provided herein are methods and compositions for treating cancers, inflammatory diseases, rasopathies, and fibrotic disease involving aberrant Ras superfamily signaling through the binding of compounds to the GTP binding domain of Ras superfamily proteins including, in certain cases, K-Ras and mutants thereof, and a novel method for assaying such compositions.
Metal-Free Chlorodeboronation of Organotrifluoroborates
作者:Gary A. Molander、Livia N. Cavalcanti
DOI:10.1021/jo201313a
日期:2011.9.2
A mild and metal-free method for the chlorodeboronation of organotrifluoroborates using trichloroisocyanuric acid (TCICA) was developed. Aryl-, heteroaryl-, alkenyl-, alkynyl-, and alkyltrifluoroborates were converted into the corresponding chlorinated products in good yields. This method proved to be tolerant of a broad range of functional groups.