170. The stobbe condensation. Part II. The cyclisation of methyl hydrogen cis-γ-3, 4-methylenedioxyphenyl-and methyl hydrogen cis-γ-3, 4-dimethoxyphenyl-itaconate …
LS El-Assal, SAM El-Wahhab
文献索引：El-Assal,L.S.; El-Wahhab,S.A.M. Journal of the Chemical Society, 1960 , p. 849 - 852
We tried unsuccessfully to isolate or identify the trans-p-half esters or their corresponding trans-acids or anhydrides: we attribute this failure to their formation in very low proportions6 or to the instability of the trans-isomers towards heat or reagents used (which might convert them into the more stable cis-isomers 6). This finds theoretical support if we accept the mechanism of the Stobbe condensation postulated by Johnson and Daub. 2 Formation of ...
