SYNTHESIS OF 4-ARYL(HETARYL)PYRAZOLO[1,5- a ]PYRAZINES BY PALLADIUM-CATALYZED SUZUKI–MIYAURA CROSS COUPLING
Sign Up to like & getrecommendations! Published in 2019 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/5204
Abstract: 4-Бромпиразоло[1,5-a]пиразины взаимодействуют с арил(гетарил)борными кислотами при наличии каталитических количеств Pd(dppf)Cl2·CH2Cl2 и избытка Cs2CO3 в системе растворителей MeCN–H2O, 9:1 с образованием 4-арил(гетарил)пиразоло[1,5-a]пиразинов. read more here.
Keywords: pyrazolo pyrazines; hetaryl pyrazolo; palladium catalyzed; pyrazines palladium ... See more keywords
Synthesis of 4-aryl(hetaryl)pyrazolo[1,5-a]pyrazines by palladium-catalyzed Suzuki–Miyaura cross coupling
Sign Up to like & getrecommendations! Published in 2019 at "Chemistry of Heterocyclic Compounds"
DOI: 10.1007/s10593-019-02579-2
Abstract: 4-Bromopyrazolo[1,5-a]pyrazines react with aryl(hetaryl)boronic acids in the presence of catalytic amounts of Pd(dppf)Cl2·CH2Cl2 and an excess of Cs2CO3 in the MeCN–H2O, 9:1 solvent system with the formation of 4-aryl(hetaryl)pyrazolo[1,5-a]pyrazines. read more here.
Keywords: pyrazolo pyrazines; hetaryl pyrazolo; aryl hetaryl; synthesis aryl ... See more keywords
Unexpected Dual Acylation of Naphtho[2,1-b]furan at the Aryl and Hetaryl Ring: Experimental and Theoretical Study
Sign Up to like & getrecommendations! Published in 2019 at "Russian Journal of General Chemistry"
DOI: 10.1134/s1070363219070041
Abstract: Depending on the reaction conditions, the acylation of 2-ethylnaphtho[2,1-b]furan leads to the formation of a mixture of 1-acetyl-, 5-acetyl-, and 1,5-diacetyl derivatives with a widely varying ratio of components, the structure of which has been… read more here.
Keywords: naphtho furan; furan aryl; acylation naphtho; aryl hetaryl ... See more keywords
Three-Component Reactions of Aromatic Amines, 1,3-Dicarbonyl Compounds and α-Bromoacetaldehyde Acetal to Access N-Aryl/HetAryl-4,5-Unsubstituted Pyrroles
Sign Up to like & getrecommendations! Published in 2020 at "Beilstein Journal of Organic Chemistry"
DOI: 10.3762/bxiv.2020.94.v1
Abstract: N-Aryl/HetAryl-4,5-unsubstituted pyrroles were synthesized from Ar/HetAr-amines, 1,3-dicarbonyl compounds and α-bromoacetaldehyde acetal by using aluminum(III) chloride as a Lewis acid catalyst through [1 + 2 + 2] annulation. This new versatile methodology provides a wide scope… read more here.
Keywords: aryl hetaryl; unsubstituted pyrroles; hetaryl unsubstituted; amines dicarbonyl ... See more keywords