Dimethyl malonate → Dimethyl-4-[4'-(2",4"-dichloro-phenoxy)-phenoxy]-2-pentenoyl-malonate

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Reaction Steps

From 4.6 g of sodium, 26 g of dimethyl malonate and 60 ml of ether a dimethyl sodium malonate solution is prepared which is added dropwise under stirring to a mixture of 37 g of 4-[4'-(2",4"-dichloro-phenoxy)-phenoxy]-2-pentenoyl chloride and 50 ml of ether. The reaction mixture is heated to boiling for 2 hours and worked up as described in Example 1. Thus 37 g of the faint yellow crystalline desired compound are obtained, yield 79%, mp.: 60°-63° C.

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