Highly Selective Palladium-Catalyzed Cross-Coupling of Secondary Alkylzinc Reagents with Heteroaryl Halides was written by Yang, Yang;Niedermann, Katrin;Han, Chong;Buchwald, Stephen L.. And the article was included in Organic Letters in 2014.HPLC of Formula: 187035-79-6 This article mentions the following:
The highly selective palladium-catalyzed Negishi coupling of secondary alkylzinc reagents with heteroaryl halides is described [e.g., using a palladacycle precatalyst ligated by CPhos, 3-chlorobenzisothiazole was coupled with i-PrZnBr.LiCl to afford 3-isopropylbenzisothiazole in 78% yield (normal:rearranged ratio = 98:2)]. The development of a series of biarylphosphine ligands has led to the identification of an improved catalyst for the coupling of electron-deficient heterocyclic substrates. Preparation and characterization of oxidative addition complex (L)(Ar)PdBr provided insight into the unique reactivity of catalysts based on CPhos-type ligands in facilitating challenging reductive elimination processes. In the experiment, the researchers used many compounds, for example, Ethyl 2-chloro-4-(trifluoromethyl)pyrimidine-5-carboxylate (cas: 187035-79-6HPLC of Formula: 187035-79-6).
Ethyl 2-chloro-4-(trifluoromethyl)pyrimidine-5-carboxylate (cas: 187035-79-6) belongs to pyrimidine derivatives. The pyrimidine nitrogenous bases are derived from the organic compound pyrimidine through the addition of various functional groups. For example, the neurotoxin tetrodotoxin is a pyrimidine derivative. It is found in a number of species including the Japanese puffer fish, the blue-ringed octopus, and the orange-bellied newt. Tetrodotoxin prevents the transmission of nerve signals and can result in paralysis and death.HPLC of Formula: 187035-79-6
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia