| 摘要 |
NEW MATERIAL:A compound shown by the formula I (X and Y are halogen, lower alkyl, lower alkoxy, lower alkoxycarbonyl, etc.; W is O, or S; R is lower alkyl, lower alkenyl, lower haloalkyl, etc., with the proviso that X, Y, and R are not methyl simultaneously). EXAMPLE:Isopropyl N-(3-chloro-4-hydroxy-5-methoxymethylphenyl) carbamate. USE:Useful as an intermediate for synthesizing an agricultural and horticultural fungicide. PREPARATION:An aminophenol shown by the formula II is reacted with a haloformic ester shown by the formula III (Z is halogen) in a solvent such as ethyl acetate, toluene, etc. in the presence of equivalent - excess dehydrohalogenating agent (e.g., N,N-diethylaniline, pyridine, etc.) under cooling or 0-150 deg.C, to give a compound shown by the formula I .
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