| 摘要 |
<p>Substd oxazolidine or thiazolidine derivs of formula (I)- (where X=-O or -S; R=haloalkyl, alkyl or alkylthio; R1, R2, R3, R4, R5 and R6 are independently H, lower alkyl, alkoxyalkyl or lower alkylol; whereby R cannot be dichloromethyl when X=-O R1 and R2=H or methyl; and R3, R4, R5 and R6 are each H), are prepd by reaction of oxazolidin- or thiazolidin inters with acid chloride in the presence of triethylamine as HCl-acceptor. (I) may be used as antagonists to damage to cereals caused by various herbicides such as esp. those of the thiocarbamate-type. (I) can protect cultures against damage or increase their tolerance to these herbicides. Alternatively (I) can influence the herbicidal act, of thiocarbamates to make them more selective. Some of (I) have broad-spectrum herbicidal act. and may be used in herbicidal-, plant-growth regulating-, nematocidal-, algicidal-, bacteriostatically-active - or fungicidal mixts.</p> |
