Healthcare careers for chemists are once again largely based in laboratories, although increasingly there is opportunity to work at the point of care, helping with patient investigation. In a patent, 1055361-35-7, name is 4-(4-((2,4-Dioxothiazolidin-5-ylidene)methyl)-2-methoxyphenoxy)-3-(trifluoromethyl)benzonitrile, introducing its new discovery. Related Products of 1055361-35-7
Strategies for controlling the regioselective reactions between 2,4- dichloroquinoline and organozinc reagents are described. 2,4- Dichloroquinoline has been found to react with benzylic zinc and phenylzinc reagents in the presence of catalytic amounts of palladium complexes to exclusively give alpha-substituted products. Several metal salts were examined as an additive for gamma-selective coupling reactions. The most effective additive for selective coupling reaction at the gamma-position has been found to be LiCl. These conditions for alpha- or gamma-selective coupling reactions were applied to the reaction between 5,7-dichloropyrazolo[1,5-alpha]pyrimidine and a biphenylmethylzinc reagent in the synthesis of the angiotensin II receptor antagonists. This regioselectivity should be generally applicable to other alpha,gamma-dichloroazine systems.
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Reference：
Quinuclidine – Wikipedia,
Quinuclidine | C7H934N | ChemSpider