Carbethoxylation of p-methylacetophenone (II) with ethyl carbonate/NaH in anhyd. benzene-DMF mixture gives the β-ketoester (III) which on ketalization with ethylene glycol in the presence of catalytic amount of PTS in dry benzene provides ethyl 3,3-ethyle
Vig, O. P.,Sharma, S. D.,Soni, B. R.,Sharma, M. L.
p. 353 - 355
(2007/10/02)
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