Abstract
Three novel poly N-phenylene-N-aroylthioureas (2a~c) were synthesized by the reaction of aryldiamines with terephthaloyl diisothiocyanate. Their structures were characterized by IR spectra and1HNMR. The preliminary biological activity tests showed that some compounds display effect in growth regulation of plants and fungicidal activity to some extent. The compound 2b has obvious growth promoting effect onOryza sativa L.(rice), the growth promoting rate to 59.05% and 71.81% in the concentration of 10 mg·L-1and 100 mg·L-1respectively, and it has obvious inhibition toEchinochloa crusgalli L.(barnyard grass), the inhibition rate of more than 75% in the concentration of 0.1~100 mg·L-1, and it has weak inhibition for the growth ofCucumis sativus L.(cucumber). The compound 2a has excellent crop safety and 2b has well selectivity for the test plants.
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