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Synthesis of dihalohydrins and tri- and tetra-substituted olefins
Synthesis of dihalohydrins and tri- and tetra-substituted olefins
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机译:二卤代醇以及三和四取代的烯烃的合成
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摘要
A novel synthesis reaction for highly stereospecific tri- and tetra-substituted olefins is described. A single stereoisomer of stable α-halo-α,β-ester is produced in high yield by the reaction of aldehyde or ketone with a trihalogenated compound such as trichloroacetate in the presence of CrCl2 in a solvent. By varying the amount of CrCl2 used, the stable dihalohydrin intermediate may be obtained as well.
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