Which of the following transformations represents malonic ester synthesis ? I CH2(CO,Et)2 R. COOH II RCH(CO,Et)2 R. COOH III ACCH,CO,Et R. .COCH3 IV RCH2COCH; R. .COOH R. COOH V RCH,CO,H Br II OIV Ov

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