Catalytic C–H Allylation and Benzylation of Pyrazoles
作者:Seri Bae、Ha-Lim Jang、Haeun Jung、Jung Min Joo
DOI:10.1021/jo5025317
日期:2015.1.2
general approach for the synthesis of allylated and benzylated pyrazoles. An electron-withdrawing substituent, such as nitro, chloro, and ester groups, at C4 renders the Lewis basic nitrogen atom to be less basic and the C–H bond more acidic than the ones of the parent ring, enabling Pd-catalyzed C–H allylation and benzylation reactions of pyrazoles. The new method expanding the scope of the C–H functionalization
Facile synthesis of hybrid Cu<sub>2</sub>O/Pd–Fe<sub>3</sub>O<sub>4</sub> nanocatalysts for C–H arylation of 4-nitroimidazoles
作者:Hyunje Woo、Junha Park、Ji Chan Park、Sungkyun Park、Jae Myung Lee、Kang Hyun Park
DOI:10.1039/c6ra05068a
日期:——
A facile synthetic strategy for a hybrid Cu2O/Pd–Fe3O4 nanocomposite via controlled thermal decomposition of Fe(CO)5 and reduction of Pd(OAc)2 and Cu(acac)2 was developed.
VERWENDUNG SUBSTITUIERTER PYRIMIDINDIONE ODER JEWEILS DEREN SALZE ALS WIRKSTOFFE GEGEN ABIOTISCHEN PFLANZENSTRESS
申请人:Bayer CropScience AG
公开号:EP3332645A1
公开(公告)日:2018-06-13
Die Erfindung betrifft die Verwendung substituierter Pyrimidindione der Formel (I) oder deren Salze
wobei die Reste in der allgemeinen Formel (I) den in der Beschreibung gegebenen Definitionen entsprechen,
zur Erhöhung der Stresstoleranz in Pflanzen gegenüber abiotischem Stress und/oder zur Erhöhung des Pflanzenertrags.
C-H Arylation of Nitroimidazoles and Nitropyrazoles Guided by the Electronic Effect of the Nitro Group
作者:Haeun Jung、Seri Bae、Ha-Lim Jang、Jung Min Joo
DOI:10.5012/bkcs.2014.35.10.3009
日期:2014.10.20
palladium-catalyzed C–H arylation reaction of nitroimidazoles and nitropyrazoles was developed using aryl bromides as arene donors. The electron-withdrawing effect of the nitrogroup allows for direct C–H arylation reactions of the nitro diazoles with high regioselectivity under mild conditions. The new C–H arylation approach is thus complementary to nucleophilicsubstitutionreactions, enabling the preparation