Fenarimol

Fenarimol, sold under the tradenames Bloc, Rimidin and Rubigan, is a fungicide which acts against rusts, blackspot and mildew fungi. It is used on ornamental plants, trees, lawns, tomatoes, peppers, eggplants, cucumbers and melons. It is mainly used to control powdery mildew. It works by inhibiting the fungus's biosynthesis of important steroid molecules (via blockade of the CYP51 enzyme).^[2]

Fenarimol

Names
IUPAC name (R/S)-2,4′-Dichloro-α-(pyrimidin-5-yl)benzhydryl alcohol
Other names α-(2-Chlorophenyl)-α-(4-chlorophenyl)-5-pyrimidinemethanol
Identifiers
CAS Number	60168-88-9 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:83686
ChemSpider	39394
ECHA InfoCard	100.056.432
PubChem CID	43226
UNII	O088GU930Q Y
CompTox Dashboard (EPA)	DTXSID2032390
InChI InChI=1S/C17H12Cl2N2O/c18-14-7-5-12(6-8-14)17(22,13-9-20-11-21-10-13)15-3-1-2-4-16(15)19/h1-11,22H Key: NHOWDZOIZKMVAI-UHFFFAOYSA-N InChI=1/C17H12Cl2N2O/c18-14-7-5-12(6-8-14)17(22,13-9-20-11-21-10-13)15-3-1-2-4-16(15)19/h1-11,22H Key: NHOWDZOIZKMVAI-UHFFFAOYAN
SMILES Clc1ccc(cc1)C(O)(c2ccccc2Cl)c3cncnc3
Properties
Chemical formula	C17H12Cl2N2O
Molar mass	331.20 g·mol−1
Appearance	Colorless powder with aromatic odor
Melting point	117 to 119 °C (243 to 246 °F; 390 to 392 K)[1]
Boiling point	240 °C (464 °F; 513 K) (decomposition)[1]
Solubility in water	13.7 mg/L at 25 °C
Solubility in other solvents	Soluble in acetone, xylene and methanol[1]
Vapor pressure	65 μ Pa (25 °C)[1]
Hazards
Lethal dose or concentration (LD, LC):
LD50 (median dose)	>2000 mg·kg−1 (oral, Rat)[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

History

Fenarimol was developed by Eli Lilly and Company around 1971.^[3]

As of early 2018, derivatives of this compound are being researched in an open source manner for possible treatment of eumycetoma.^[4]

Synthesis

Fenarimol is made by the reaction of 2,4'-dichlorobenzophenone with an organolithium pyrimidine made via bromine-lithium exchange.^[2]