Acetalsare a special type of ether. Many of these compounds are hydrolyzed easily, particularly in a basic medium, and their thermal stability is not very high. Upon heating, the acetals typically regenerate the aldehyde and form an ether, as shown in the following reaction for formaldehyde di...
Transacetalization of 1b with 1,4-dioxa-spiro[4.5]decane is expected to release cyclohexanone that was protected in its cyclic ethylene glycol ketal form to yield the cyclic O-ethyl-1,3-dioxolanium ion of m/z 103 (Scheme 3; X = O; R,R = (CH2)5; R1 = C2H5). Download: Download...
All polymers were obtained in high yields and moderate inherent viscosity ranging from 0.25 to 0.41 dL/g. The proposed chemical structures of condensation polymers were confirmed by 1H-NMR, 13C-NMR, FTIR spectroscopies, TGA, and DSC. Thermal analysis indicated that these polymers are stable ...
ClassificationFairly stableFairly stableFairly stableFairly stable Conclusion In summary, we developed an efficient strategy to prepare libraries of bicyclic acetals from allylic alcohols and cyclic enol ethers. This reaction pathway is distinct from reported [2 + 2], [4 + 2], and linear coupling ...
Transacetalization of 1b with 1,4-dioxa-spiro[4.5]decane is expected to release cyclohexanone that was protected in its cyclic ethylene glycol ketal form to yield the cyclic O-ethyl-1,3-dioxolanium ion of m/z 103 (Scheme 3; X = O; R,R = (CH2)5; R1 = C2H5). Download: Download...