Stereospecific Electrophilic Fluorination of Alkylcarbastannatrane Reagents.
Stereospecific Electrophilic Fluorination of Alkylcarbastannatrane Reagents.
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DOI:
10.1002/anie.201704672
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发表时间:
2017-10-02
期刊:
影响因子:
--
通讯作者:
Biscoe MR
中科院分区:
文献类型:
--
作者:
Ma X;Diane M;Ralph G;Chen C;Biscoe MR
We report the use of isolable primary and secondary alkylcarbastannatrane nucleophiles in site-specific fluorination reactions. These reactions occur without the need for transition metal catalysis or in situ activation of the nucleophile. In the absence of the carbastannatrane backbone, alkyltin nucleophiles exhibit no activity towards fluorination. When enantioenriched alkylcarbastannatranes are employed, fluorination occurs predominately via a stereoinvertive mechanism to generate highly enantioenriched alkyl fluoride compounds. These conditions can also be extended to stereospecific chlorination, bromination, and iodination reactions. Site-specific fluorination reactions of isolable primary and secondary alkylcarbastannatrane nucleophiles occur fast, without the need for transition metal catalysis, or in situ activation of the nucleophile. The reaction conditions can also be extended to stereospecific chlorination, bromination, and iodination reactions.
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