| 摘要 |
1,1 DIALKOXY-2-METHYL-4,4-DIACYLOXY-2-BUTENES- 1,1-Dialkoxy-2-methyl-4,4-diacyloxy-2-butenes having the general structure: in which R1 represents alkyl substituents having from 1 to 5 carbon atoms, or both R1 substituents together represent a single ethylene or propylene substituent, or a single C1-C2 alkyl substituent, and R2 represents alkyl substituents having from 1 to 5 carbon atoms, or cycloalkyl substituent having from 5 to 7 carbon atoms, or aromatic substituents (preferably phenyl substituents). These new compounds are useful as building blocks in the synthesis of terpenes and carotenoids. |
