The stereochemistry of the Grignard — Ortho ester reaction revisited: Regioselective endocyclic cleavage in the reaction of Grignard reagents with cis-2-methoxy-4-METHYL-1,3-DIOXANE (cas 1120-97-4)
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Add time:09/25/2019 Source:sciencedirect.com
The reaction of cis-2-methoxy-4-methyl-1,3-dioxane (4) with Grignard reagents proceeds in a totally regioselective manner via rupture of the less congested C(2)O(1) bond remote from the 4-methyl substituent. The analogous r-2-methoxy-cis-4,cis-6-dimethyl-1,3-dioxane (2) is totally inert to the action of Grignard reagents.
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