Abstract

Sumona Kumari^*, Rajvir Singh and R. K. Walia

DOI : http://dx.doi.org/10.13005/ojc/300346

Synthesis of 3-(4-chloro/methyl/nitro/methoxy/3,4,5-trimethoxy/2,4-dichloro/ 4-bromo/ 3, 4-dimethoxy/ 2, 4-dimethoxy/ 3-bromo/ 2-chloro/ 2-methoxy phenyl)-1-(4-hydroxyphenyl)-2-propen-1-one (14-25) has been carried out from substituted benzaldehyde (1-12) and 4-hydroxy acetophenone (13). The condensation of synthesized 2-propen-1-ones (14-25) with phenyl isocyanate (26) gave 4-[3-(4-chloro/ methyl/nitro/methoxy/3, 4, 5-trimethoxy/2, 4-dichloro/4-bromo/3, 4-dimethoxy/2, 4-dimethoxy/3-bromo phenyl) prop-2-enoyl] phenyl phenylcarbamate (27-36). The synthesized compounds were characterized on the basis of analytical and spectral data. All the compounds were evaluated for their nematicidal activity in- vitro against second stage juveniles (J₂) of root - knot nematode (Meloidogyne javanica). Incorporation of carbamoyloxy moiety in 2-propen-1-ones enhanced the activity. Irrespective of the concentration, compounds 3-(4-methoxyphenyl)-1-(4-hydroxyphenyl)-2-propen-1-one (17) and 4-[3-(4-methoxyphenyl) prop-2-enoyl] phenyl phenyl carbamate (30) have shown maximum nematode mortality i.e. 30% and 51.8%.

Substituted-2-propen-1-one; Carbamate; Nematicidal activity; Root-knot nematode; Meloidogyne javanica

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