Diastereoselective synthesis of polypropionates: Cationic couplings of 4-acetoxy-1,3-dioxanes with crotyl-metal reagents
Autor: | Christopher J. Sinz, Scott D. Rychnovsky |
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Rok vydání: | 1998 |
Předmět: | |
Zdroj: | Tetrahedron Letters. 39:6811-6814 |
ISSN: | 0040-4039 |
DOI: | 10.1016/s0040-4039(98)01464-6 |
Popis: | Lewis acids promote the coupling of 4-acetoxy-1,3-dioxanes 1 with crotyl-metal species to generate propionate motifs such as 2. The reactions show a marked dependence on Lewis acid, the crotyl metal species, and the presence and stereochemical disposition of a C5 methyl group. A 1,3-syn methyl relationship is favored in these additions. |
Databáze: | OpenAIRE |
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