Question
How will you obtain valine using Gabriel phthalimide synthesis? Explain.
Answer :
Word Count : 116
Prepare potassium phthalimide (phthalimide + KOH). Alkylate it with ethyl α-bromoisovalerate (ethyl 2-bromo-3-methylbutanoate) under SN2 conditions (DMF or acetone, heat, K2CO3 or KOH) to give N-(CH(R)-COOEt)phthalimide where R = ___ _____ __________ _____ ________.
______ ______ ___ ____ ________ _____ _________ _____ ________ _________ _____ __________.
___ ___ ______ ________ __________ _____ ___ _____ ____ ______ ___.
____ ___ ___ ______ _____ ______ ___ _________ _____ ________ ________.
______ _________ ________ __________ ________ ________.
______ _____ ______ ______ _____ ________ ______ _____ ___ _________ _____ _______.
__________ _______ _________ ______ ________ ___ ____ _____ ________ _______ _____ ______.
___ ____ ___ ______ ________ _____.
____ _____ ______ _________ _________ _______ _________ _________ ____.
______ ______ _______.
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Prepare potassium phthalimide (phthalimide + KOH). Alkylate it with ethyl α-bromoisovalerate (ethyl 2-bromo-3-methylbutanoate) under SN2 conditions (DMF or acetone, heat, K2CO3 or KOH) to give N-(CH(R)-COOEt)phthalimide where R = ___ _____ __________ _____ ________.
______ ______ ___ ____ ________ _____ _________ _____ ________ _________ _____ __________.
___ ___ ______ ________ __________ _____ ___ _____ ____ ______ ___.
____ ___ ___ ______ _____ ______ ___ _________ _____ ________ ________.
______ _________ ________ __________ ________ ________.
______ _____ ______ ______ _____ ________ ______ _____ ___ _________ _____ _______.
__________ _______ _________ ______ ________ ___ ____ _____ ________ _______ _____ ______.
___ ____ ___ ______ ________ _____.
____ _____ ______ _________ _________ _______ _________ _________ ____.
______ ______ _______.
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