Exp 5: Reductive Amination Prt2
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6 Terms
What is the purpose of saving some imine for TLC analysis? Select all that apply.
to compare the Rf's of the starting material and product
A gas is formed in this step from the quenching of any unreacted borohydride. What is this gas?
hydrogen gas
What should be in the organic layer?
ethyl acetate only
ethyl acetate and NaBH4
NaBH4 and amine product
ethyl acetate and amine product
water and byproducts from NaBH4
ethyl acetate and amine product
What is the purpose of washing the organic layer with brine?
it removes water from the organic layer
What structural feature of ethyl acetate will complicate the IR spectrum?
the methyl C-H bonds
the ethyl C-H bonds
the C=O double bond of the ester
the C-O single bond of the ester
both A & B
the C=O double bond of the ester
A TLC analysis using 30% EtOAc in hexanes indicated an Rf = 0.63 for the product. What should you do from here?
Repeat the TLC analysis using a solvent mixture with lower polarity (15% EtOAc in hexanes) to decrease the Rf to about 0.3
Note 
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