When doing an aqueous/ethereal \"work-up\" of the sodium borohydride reduction o

Question

When doing an aqueous/ethereal "work-up" of the sodium borohydride reduction of 3, 3 dimethyl-2-butanone we did a number of washes with "brine" (saturated sodium chloride solution). What was the purpose of these washes? Explain. (2) After the dehydration experiment, we treated the alkene distillate with potassium carbonate. Why did we choose this instead of just Na2SO4 or MgSO4. (2) When using MgSO4 (s) as a drying agent, how does one know if enough drying agent been added? (2) A rotary evaporator was used after extracting and drying the organic layer from the reduction reaction work-up. What is the purpose of the rotary evaporator? How does it

Explanation / Answer

When doing an aqueous / ethereal work-up of the sodium borohydride reduction of 3,3 dimethyl -2- butanone we did a number of washes with brine or saturated sodium chloride solution due to following reasons.

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