In "advanced organic chemistry: part B" fifth edition, page:130, the authors state that chiral proline-like additives to Sn(II) compounds can further increase stereoselectivity of aldol reaction. Then they showed how different TS evolve to the observed product

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Wouldn't it be more accurate if the the enolate approached the aldehyde from the aldehyde's Re face not Si. because I find the Si face attack more hindered (at least in the open TS)


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