Problem- The Claisen condensation of which of these esters demands the use of (c6h5)3cna as the base (as opposed to sodium ethoxide)?
a) Ch3ch2co2c2h5 b) ch3co2c2h5 c) c6h5ch2co2c2h5 d) c6h5ch(ch3)co2c2h5 e) none of these
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