| 摘要 |
PCT No. PCT/JP83/00371 Sec. 371 Date Jun. 4, 1984 Sec. 102(e) Date Jun. 4, 1984 PCT Filed Oct. 21, 1983 PCT Pub. No. WO84/01773 PCT Pub. Date May 10, 1984.The present invention relates to a novel process for producing 3-chloro-1-formyl-4-phenylpyrroles having the general formula [I] as a useful fungicidal agent in agriculture and horticulture which is manufactured from the starting material of 3-phenyl-2,2,4-trichlorobutanal having the general formula [IV] as set forth in the following reaction formulae: By means of obtaining a pyrroline derivative having the general formula [III] as the intermediate compound, its production operation is greatly simplified and its yield rate is raised in comparison with the conventional processes. <IMAGE> <IMAGE> +TR <IMAGE> where X denotes the same or different kinds of substituent(s) being chosen from the group consisting of halo, nitro, and trifluoromethyl and n denotes zero or an integer of 1 or 2.
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