12.07.2015 Views

Theoretical Test

Theoretical Test

Theoretical Test

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nOOOThe thermal decomposition of carbonate ester itself normally occurs wellabove 150℃.9-3-1. Two plausible mechanisms have been suggested for thisdecomposition reaction having relatively high activation energy. Drawexpected intermediates and products from this reaction.+pericyclictrans. stateOOCH 3CH 3B+OOOHCH 2OH+COOODB + H + OH+heterolyticcleavageE +_OC9-3-2. In the presence of a trace amount of acid, the reaction temperaturecan be reduced to below 100℃. Draw expected intermediate F fromthe following chemical amplification process based on using t-BOC.16

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