Neopentyl glycol acetal

Protection :
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ReagentsTimeYield
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Camphorsulfonic acid Neopentyl glycol6 h96 %Camphorsulfonic acid, Neopentyl glycolPhHReflux, 6 h, 96%
Deprotection :
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ReagentsTimeYield
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HCl2 h96 %HClMeOH0 °C to RT, 2 h, 96%"Both C1-epimers were separated and the following steps were carried in separate vessels."