Atroposelective Arene Formation by Carbene‐Catalyzed Formal [4+2] Cycloaddition
作者:Ke Xu、Wenchang Li、Shaoheng Zhu、Tingshun Zhu
DOI:10.1002/anie.201910049
日期:2019.12.2
Atroposelective arene formation is an efficient method to build axially chiral molecules with multi-substituted arenes. Reported here is an organocatalyzed atroposelective arene formationreaction by an N-heterocyclic carbene (NHC) catalyzed formal [4+2] cycloaddition of conjugated dienals and α-aryl ketones. This study expands the synthetic potential of NHC organocatalysis and provides a competitive
Nucleophile and aryl radical reactivity in SRN1 aromatic nucleophilic substitution reactions. Absolute and relative electrochemical determination
作者:Christian Amatore、Mehmet A. Oturan、Jean Pinson、Jean Michel Saveant、Andre Thiebault
DOI:10.1021/ja00298a009
日期:1985.6
Utilisation de 3 methodes electrochimiques pour determiner les reactivites d'une serie de 26 couples radical aryl-nucleophile
利用 3 种方法电致化学反应倾析反应性 d'une serie de 26 对自由基芳基亲核试剂
Tautomerism in ketomethyl quinolines. Part 3. 4-Ketomethylquinolines
作者:John V. Greenhill、Hossein Loghmani-Khouzani、Derek J. Maitland
DOI:10.1139/v91-104
日期:1991.4.1
A series of 4-ketomethylquinolines has been prepared and their tautomerism investigated. The compounds were prepared from 4-methylquinoline deprotonated with lithium diisopropylamide or potassium ethoxide and treated with esters. Attempted deprotonation with tert-butyllithium or phenyllithium led to 2-substituted-4-methylquinolines. The simple alkyl or aryl 4-keto methylquinolines exist essentially
[EN] METHODS OF INHIBITING TGF BETA WITH SUBSTITUTED PYRAZOLES<br/>[FR] PROCEDES RELATIFS A L'INHIBITION DU TGF-BETA PAR LE BIAIS DE PYRAZOLES SUBSTITUES
申请人:LILLY CO ELI
公开号:WO2004026302A1
公开(公告)日:2004-04-01
Substituted pyrazoles are disclosed useful in the treatment of cancer and other disease states influenced by TGF beta by inhibiting TGF-β in a patient in need thereof.
Kroehnke; Vogt, Justus Liebigs Annalen der Chemie, 1956, vol. 600, p. 211,224