Recommanded Product: 3395-91-3. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Methyl 3-bromopropanoate, is researched, Molecular C4H7BrO2, CAS is 3395-91-3, about Asymmetric α-alkylation of cyclic β-keto esters and β-keto amides by phase-transfer catalysis. Author is Wang, Yakun; Li, Yueyun; Lian, Mingming; Zhang, Jixia; Liu, Zhaomin; Tang, Xiaofei; Yin, Hang; Meng, Qingwei.
Without employing any transition metal, a highly enantioselective α-alkylation of cyclic β-keto esters and β-keto amides has been realized by phase-transfer catalysis. This improved procedure is applicable to different kinds of bromides with cinchona derivatives and gives the corresponding products e.g., I and e.g., II, in excellent enantiopurities (up to 98% ee) and good yields (up to 98%). Moreover, the reaction was scalable and the phase-transfer catalyst was recyclable. This provided an alternative and competitive method to the asym. α-alkylation of β-dicarbonyl compounds
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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem