Method of and bait compositions for controlling mollusks
申请人:American Cyanamid Company
公开号:US04929634A1
公开(公告)日:1990-05-29
This invention relates to methods of controlling mollusks with arylpyrrole compounds and to bait compositions containing a molluscicidally effective amount of an arylpyrrole compound.
An iodoxybenzoic acid-mediated selected oxidative cyclization of N-hydroxyalkyl enamines was developed. Through this strategy, a variety of 2,3-disubstituted pyrroles and pyridines were produced in good selectivity involving oxidation of alcohol, followed by condensation of aldehyde and α-C of enamines. Furthermore, this metal-free method has several advantages, including the use of environmentally
Arylpyrrole insecticidal acaricidal and nematicidal agents and methods
申请人:American Cyanamid Company
公开号:US05010098A1
公开(公告)日:1991-04-23
This invention is directed to certain novel insecticidal, acaricidal and nematicidal arylpyrrole agents and a method for controlling insects, acarids and nematodes therewith. The invention also is directed to a method for protecting growing plants from insect, acarid and nematode attack by applying to said plants or the soil in which they are growing, an insecticidally, acaricidally or nematicidally effective amount of a novel arylpyrrole compound. The present invention further is directed to a method for the preparation of the arylpyrrole compounds.
Novel and convenient routes to substituted pyrroles and imidazoles
作者:Alan R. Katritzky、Lie Zhu、Hengyuan Lang、Olga Denisko、Zuoquan Wang
DOI:10.1016/0040-4020(95)00851-x
日期:1995.11
pyrroles. Lithiaiion of 6 followed by reactions with imines gives cyclized 4,5-dihydroimidazoles 14 which upon further treatment with ZnBr2 or direct refluxing in toluene yield the 1,25-trisubstituted imidazoles 15 in good yields.
One-Pot Synthesis of 3-Substituted 2-Arylpyrrole in Aqueous Media via Addition–Annulation of Arylboronic Acid and Substituted Aliphatic Nitriles
作者:Md Yousuf、Susanta Adhikari
DOI:10.1021/acs.orglett.7b00490
日期:2017.5.5
Pd(II)-catalyzed C–C coupling reactions between substituted aliphatic nitriles and arylboronic acids followed by in situ cyclodehydration have been employed for the first time to synthesize a wide variety of 3-substituted 2-aryl-1H-pyrroles in aqueous acetic acid. This one-pot synthesis is green, and it conforms to atom economy. The structures of two representative pyrroles, 3k and 5f, were confirmed