Synthesis of Tertiary Cyclobutanols through Stereoselective Ring Expansion of Oxaspiropentane (cas 157-41-5)s Induced by Grignard Reagents

Add time:09/28/2019    Source:infona.pl

The stereoselectivity of the ring expansion of oxaspiropentanes to cyclobutanols induced by Grignard reagents has been studied. It has been found that the reaction occurs through the intermediacy of a cyclobutanone, formed stereospecifically, whereas the attack of the Grignard reagent on the carbonyl group of the cyclobutanone is stereospecific only in the case of the oxaspiropentanes derived from aldehydes.

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