Formaldehyde di-p-tolyl dithioacetal S-oxide

Formaldehyde dimediyl preparative method for a-hydroxy aldehyde derivatives (equation 27). A chiral analog of (113), (S formaldehyde di-p-tolyl dithioacetal S-oxide (114), can be synthesized from (-)-mentyl (/ )-p-toluenesulfinate. - The reaction of the lithio derivative of (S)-(114)... 

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