- Chemical Name:Cerium trichloride
- CAS No.:11098-86-5
- Molecular Formula:CeCl3
- Molecular Weight:175.5695
- Hs Code.:
Synonyms:Ceriumchloride; Cerium trichloride; Cerium(III) chloride; Cerous chloride;Cerous(III) chloride; NSC 84267
Synonyms:Ceriumchloride; Cerium trichloride; Cerium(III) chloride; Cerous chloride;Cerous(III) chloride; NSC 84267
98%,99%, *data from raw suppliers
The research investigates the selective 1,2-addition of organocerium(II) reagents to a,?-unsaturated carbonyl compounds. The purpose is to explore the regioselectivity of these reagents compared to organolithiums and Grignard reagents, and to understand the mechanistic pathway of this reaction. Key chemicals include anhydrous cerium(III) chloride, organolithium reagents, and a,?-unsaturated carbonyl compounds such as 2-cyclohexenone and 4-phenyl-3-buten-2-one. The study found that organocerium(II) reagents react with these compounds to produce 1,2-addition products with higher regioselectivity, suggesting a polar reaction pathway. The reagents were generated by reacting cerium(III) chloride with organolithium reagents and were tested with various substrates, including (E)- and (Z)-1-(a-methoxyphenyl)-3-phenyl-2-propen-1-one. The results showed that cerium reagents exclusively underwent 1,2-addition, unlike Grignard or lithium reagents which produced significant amounts of 1,4-addition products. This selective 1,2-addition reaction of organocerium reagents has potential synthetic utility, particularly for natural product syntheses.