Enantioselective synthesis of hydroxyethyloxiranecarboxylic acid derivatives by epoxidation of 5-ylidene-1,3-dioxane-4-ones
摘要:
Epoxidation of the 5-ylidene-1,3-dioxane-4-ones 3 with dimethyldioxirane (4) affords enantiomerically pure oxiranes 5 in satisfactory yields. These products 5 are novel hydroxyethyloxiranecarboxylic acid derivatives and can be reduced to enantiomerically pure 5-(alpha-hydroxyalkyl)- 1,3-dioxane-4-ones 6.