Methyl chloroacetate → Acetic acid, 2-[(3,5,6-trichloro-2-pyridinyl)oxy]-, methyl ester

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반응 단계

Mixtures of 2.56 g (0.01 g mole) of methyl 3,5,6-trichloro-2-pyridyl carbonate, 0.01 to 0.1 g mole of methyl chloroacetate, and initiator as noted were heated at 100° C. until gas evolution had stopped. Unreacted methyl chloroacetate was then removed from the reaction mixture using a rotary evaporator. The crude product remaining was analyzed by gas chromatography. In each case, a good yield (about 2.8 g of crude product) of the expected 3,5,6-trichloro-2-pyridoxyacetic acid, methyl ester (III) was found with only small amounts of by-products IV, V, and VI as shown schematically below. ##STR2## The reaction conditions and results are listed in detail in Table II.

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