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Search results for: ozonolysis
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... , this was improved to 5:1 in favor of the desired diastereomer. Ozonolysis of 14 followed by selective reduction of the aldehyde gave the primary alcohol, ...
... 3. Protection and halide exchange set the stage for homologation with allylmagnesium chloride. Ozonolysis followed by condensation with the acyl oxazolidinone 6 set the last two stereogenic centers ...
... 4 ) . Wittig homologation established the (Z ) -iodide 5. Selective ozonolysis followed by condensation with the phosphorane 7 set the stage for Jørgensen-Córdova epoxidation ( ...
... component of 3. The preparation of 1 began with commercial enantiomerically-pure citronellol 4. Ozonolysis of the ester delivered the aldehyde 5, which was hydroxylated with high diastereocontrol ...
... give the ester 4 as a 10:1 ratio of diastereomers. Note that ozonolysis of 4 followed by aldol condensation would give the cyclohexenone 5. Many methods ...
... could be directed toward either 11 (BF3.OEt2) or 12 (MgBr2) . Ozonolysis of 12 followed by OH-directed reduction gave 13, a key intermediate toward the ...
... ), each enantiomer of which is commercially available in bulk. After protection and ozonolysis , the first singly-aminated stereogenic center was installed by enantioselective, and therefore diastereoselective ...
... serves as a safe and practical alternative to mainstream oxidative cleavage protocols, such as ozonolysis and the Lemieux-Johnson reaction. see article for more examples proposed mechanism Oxidative Cleavage ...
... 2. The aldehyde 2 was prepared from the inexpensive geraniol ether 5. Selective ozonolysis followed by Wittig homologation gave the bromodiene, which was converted via dehydrobromination and ...
... 1 and thus of 3 was set by Noyori hydrogenation of the enone 4. Ozonolysis followed by acetylation delivered the pyridone 6 as an inconsequential mixture of diastereomers. ...
