Synthesis and herbicidal activity of phenylproparginols.
摘要:
A three-step/one-pot procedure was developed for preparing herbicidal fluorophenylproparginols from acetophenones by way of an enol phosphate intermediate. Side-by-side testing of 16 of the more active analogs showed that trans-2-methyl-1-[2-(4-methoxy-2,3,5,6-tetrafluorophenyl)ethynyl]cyclohexanol (21c) was the most potent example. On the basis of the biological response data obtained for these first-tier analogs, a physiochemical ''structural space'' was defined. Twenty additional analogs were then targeted for synthesis in an experimental design set up to probe that structural space. Scaled rank sums analysis of herbicidal activity for these second-tier analogs produced a quantitative structure/activity relationship model indicating that 21c bears a substitution pattern that is at or near the optimum for this class of chemistry.
This paper reports the synthesis and the biological activity of novel tetrahydronaphthalenes with substitution of functional groups at each position of the aromatic ring and substitution of various alkyl groups at the 1-position of the non-aromatic ring. These compounds exhibited pre-emergent herbicidal activity which was determined by the orientation and type of functional groups on the aromatic ring with the 1,1-dimethyl substitution on the non-aromatic ring. The activity tended to be highest for nitro or methyl at the 5- and 7-positions with an amino or ester group at the 6-position and a dimethyl substitution at the 1-position.
Parlow John J., Clark Robert D., J. Agr. and Food Chem, 42 (1994) N 11, S 2600-2609
作者:Parlow John J., Clark Robert D.
DOI:——
日期:——
Syntheses of tetrahydronaphthalenes. Part II
作者:John J. Parlow
DOI:10.1016/s0040-4020(01)87011-3
日期:1994.3
Syntheses utilizing the cyclodehydration method to prepare novel tetrahydronaphthalenes substituted with functional groups at each position of the aromatic ring and various alkyl groups at the 1-position of the non-aromatic ring are described.
Synthesis and herbicidal activity of phenylproparginols.
作者:John J. Parlow、Robert D. Clark
DOI:10.1021/jf00047a043
日期:1994.11
A three-step/one-pot procedure was developed for preparing herbicidal fluorophenylproparginols from acetophenones by way of an enol phosphate intermediate. Side-by-side testing of 16 of the more active analogs showed that trans-2-methyl-1-[2-(4-methoxy-2,3,5,6-tetrafluorophenyl)ethynyl]cyclohexanol (21c) was the most potent example. On the basis of the biological response data obtained for these first-tier analogs, a physiochemical ''structural space'' was defined. Twenty additional analogs were then targeted for synthesis in an experimental design set up to probe that structural space. Scaled rank sums analysis of herbicidal activity for these second-tier analogs produced a quantitative structure/activity relationship model indicating that 21c bears a substitution pattern that is at or near the optimum for this class of chemistry.