Browse
Submit Data
Databases
API
Help

Dataset Information

8 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Synthesis Candidates Herbicide Through Optimization Quinclorac Containing 3-Methyl-1H-pyrazol-5-yl.

ABSTRACT: To enhance quinclorac potency, twenty-five derivatives were synthesized containing 3-methyl-1H-pyrazol-5-yl by intermediate derivatization methods (IDMs). These compounds were confirmed by melting point (mp), ¹HNMR, ¹³CNMR, and HRMS. The compound 1,3-dimethyl-1H-pyrazol-5-yl 3,7-dichloroquinoline-8-carboxylate (10a) was determined by X-ray diffraction. The activity of these compounds substituent on the phenyl was: electron-drawing group > neutral group > donor-drawing group, the results was like that of substituted benzyl group on pyrazole. The herbicidal activity assays showed that compounds 1-(2-fluorophenyl)-3-methyl-1H-pyrazol-5-yl 3,7-dichloroquinoline-8-carboxylate (8l, EC₅₀ = 10.53 g/ha) and 10a (EC₅₀ = 10.37 g/ha) had an excellent inhibition effect on barnyard grass in greenhouse experiment. Greenhouse safety experiment of rice exhibited almost no difference in plant height and fresh weight treated 10a at stage 1∼2-leaf of rice after 14 days but 8l had a detrimental effect. Two season field assays showed 10a herbicidal activity on barnyard grass at 150 g/ha as equal as 300 g/ha quinclorac in fields in 2019 and 2020. The study demonstrated that 10a could be further researched as a potential herbicide to control barnyard grass in fields.

SUBMITTER: Luo D

PROVIDER: S-EPMC8080966 | biostudies-literature |

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Similar Datasets

Methyl 5-methyl-1-(1H-pyrazol-3-yl)-1H-1,2,3-triazole-4-carboxyl-ate.

Project description:The asymmetric unit of the title compound, C8H9N5O2, contains two independent mol-ecules (A and B) in which the dihedral angles between the triazole and pyrazole rings are 4.80?(14) and 8.45?(16)°. In the crystal, mol-ecules are linked by N-H?N hydrogen bonds into supra-molecular independent A and B chains propagating along the b-axis direction. The crystal structure also features ?-? stacking between the aromatic rings of adjacent chains, the centroid-centroid separations being 3.8001?(15), 3.8078?(17), 3.8190?(14) and 3.8421?(15)?Å.

| S-EPMC4120607 | biostudies-literature

5-Methyl-1-[(4-methyl-phen-yl)sulfon-yl]-1H-pyrazol-3-yl 4-methyl-benzene-sulfonate.

Project description:In the title compound, C(18)H(18)N(2)O(5)S(2), the tolyl rings are oriented at a dihedral angle of 16.15?(11)° with respect to one another. The 5-methyl-1H-pyrazol-3-ol ring is roughly planar (r.m.s. deviation = 0.0231?Å) and subtends angles of 73.82?(8) and 89.85?(8)° with the tolyl rings. In the crystal, very weak ?-? inter-actions between tolyl groups, with centroid-centroid distances of 4.1364?(19) and 4.0630?(16)?Å, together with a C-H?? contact generate a three-dimensional network.

| S-EPMC3393995 | biostudies-literature

3,5,3',5'-Tetra-methyl-4,4'-bi(1H-pyrazol-yl) hemihydrate.

Project description:In the title compound, C(10)H(14)N(4)·0.5H(2)O, the amino H atom of one of the two pyrazole rings is disordered over its two N atoms in a 1:1 ratio. The pyrazole rings are aligned at 60.1?(1)°. In the crystal, two bipyrazolyl mol-ecules are linked by an N-H?N hydrogen bond, generating a dimer; the dimer is connected to the water mol-ecule, which lies on a twofold rotation axis, resulting in the formation of a chain that makes an angle of ca 45.3?(1)° with the ab plane. The chains are cross-linked by N-H?O and O-H?N inter-actions, forming a three-dimensional network.

| S-EPMC3470248 | biostudies-literature

4-[(5-Hydr-oxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)phenyl-meth-yl]-5-methyl-2-phenyl-1H-pyrazol-3(2H)-one ethanol hemisolvate.

Project description:The asymmetric unit of the title compound, C(27)H(24)N(4)O(2)·0.5C(2)H(6)O, comprises two crystallographically independent mol-ecules (A and B) with slightly different conformations, and one ethanol mol-ecule of crystallization. Intra-molecular C-H⋯O and O-H⋯O hydrogen bonds generate six- and eight-membered rings, producing S(6) and S(8) ring motifs, respectively. In mol-ecule A, one of the benzene rings is disordered over two positions, with site-occupancy factors of 0.542 (11) and 0.458 (11). The dihedral angles between the central benzene ring and the two outer benzene rings are 73.88 (9) and 82.6 (2)/88.9 (2)° in mol-ecule A, and 80.81 (8) and 79.38 (8)° in mol-ecule B. In the crystal structure, mol-ecules form infinite one-dimensional chains in the (101) plane. The crystal structure is stabilized by inter-molecular O-H⋯N, N-H⋯N, N-H⋯O and C-H⋯O hydrogen bonds, weak C-H⋯π and π-π [centroid-centroid = 3.5496 (1) Å] inter-actions.

| S-EPMC2967978 | biostudies-literature

4-[3,4-Dimethyl-1-(4-methyl-phen-yl)-5-oxo-4,5-dihydro-1H-pyrazol-4-yl]-3,4-dimethyl-1-(4-methyl-phen-yl)-4,5-dihydro-1H-pyrazol-5-one.

Project description:In the title compound, C(24)H(26)N(4)O(2), the complete mol-ecule is generated by the application of twofold symmetry. The pyrazole ring is approximately planar [r.m.s. deviation = 0.026 Å] and the benzene ring is twisted out of this plane [dihedral angle = 21.94 (7)°]. A twist in the mol-ecule about the central C-C bond [1.566 (3) Å] is also evident [C-C-C-C torsion angle = 44.30 (14)°]. Supra-molecular layers in the bc plane are formed in the crystal packing via C-H⋯O and C-H⋯π inter-actions.

| S-EPMC3343962 | biostudies-literature

N-(2-Methyl-phen-yl)-6-(1H-pyrazol-1-yl)pyridazin-3-amine.

Project description:The title compound, C(14)H(13)N(5), crystallizes with two crystallographically independent mol-ecules in the unit cell. The two mol-ecules form dimers through inter-molecular N-H?N and C-H?N hydrogen bonds. The hydrogen-bonding motifs are R(2) (2)(8) for both the N-H?N and C-H?N inter-actions. The pyrazole and pyrimidine rings form dihedral angles of 6.2?(3) and 8.3?(3)° with each other and the dihedral angles between the pyrazole and benzene rings are 54.9?(2) and 58.6?(2)°. The benzene rings of neighbouring dimers also exhibit C-H?? inter-actions.

| S-EPMC2969459 | biostudies-literature

(E)-3-(4-Methyl-phen-yl)-3-[3-(4-methyl-phen-yl)-1H-pyrazol-1-yl]-2-propenal.

Project description:In the title compound, C(20)H(18)N(2)O, the pyrazole ring adopts a planar conformation. The C-N bond lengths in the pyrazole ring are shorter than a standard C-N single bond (1.443?Å), but longer than a standard double bond (1.269?Å), indicating electron delocalization. The propenal group assumes an extended conformation. Inter-molecular C-H?O hydrogen bonds connect mol-ecules into cyclic centrosymmetric R(2) (2)(26) dimers, which are cross-linked via C-H?? inter-actions.

| S-EPMC2959754 | biostudies-literature

1,1'-Bis(1-acetyl-5-methyl-1H-pyrazol-3-yl)ferrocene.

Project description:The title compound, [Fe(C(11)H(11)N(2)O)(2)], crystallizes with two independent mol-ecules in the asymmetric unit which have have different conformations. In one mol-ecule, the two ferrocene cyclo-penta-dienyl rings are fully eclipsed and the two pyrazole rings are syn to each other; in the other, the two cyclo-penta-dienyl rings are synclinal and the pyrazole rings are anti. In both mol-ecules, the acetyl group attached to the pyrazole ring is oriented away from the iron-cyclo-penta-dienyl group of ferrocene.

| S-EPMC3246958 | biostudies-literature

4-(3,4-Diacetyl-5-methyl-1H-pyrazol-1-yl)benzene-sulfonamide.

Project description:In the title mol-ecule, C(14)H(15)N(3)O(4)S, the pyrazole ring is aligned at a dihedral angle of 55.5?(1)° with respect to the benzene ring; the mean planes of the acetyl substituents are twisted by 13.4?(3) and 30.1?(3)° with respect to the pyrazole ring. Inter-molecular classical N-H?O and weak C-H?O hydrogen bonding links the mol-ecules, forming a three-dimensional network architecture in the crystal structure.

| S-EPMC3052070 | biostudies-literature

3-(5-Methyl-3-phenyl-1H-pyrazol-1-yl)propanamide monohydrate.

Project description:In the title compound, C(13)H(15)N(3)O·H(2)O, the dihedral angle between the pyrazole and benzene rings is 26.6?(2)° and the N-C-C-C torsion angle is 153.6?(3)°. In the crystal, adjacent mol-ecules are linked by N-H?N, N-H?O and O-H?O hydrogen bonds into a network structure running along the a axis.

| S-EPMC3050230 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data