Expanded scope of heterocyclic biaryl synthesis via a palladium-catalysed thermal decarboxylative cross-coupling reaction
作者:Marie Kissane、Orla A. McNamara、David Mitchell、David M. Coppert、Humphrey A. Moynihan、Kurt T. Lorenz、Anita R. Maguire
DOI:10.1016/j.tetlet.2011.11.051
日期:2012.1
The palladium-catalysed decarboxylativecross-coupling of heterocyclic aromaticcarboxylates and aryl halides is described. The cross-coupling proceeds under relatively mild conditions using catalytic Pd(0) and tetrabutylammonium bromide (TBAB). Utilizing a mixed solvent system consisting of N,N-dimethylformamide (DMF) and N-methyl-2-pyrrolidone (NMP), the cross-coupling system operated at temperatures
A Practical Synthesis of Biaryls via a Thermal Decarboxylative Pd-Catalyzed Cross-Coupling Reaction Operating at Moderate Temperature
作者:David Mitchell、David M. Coppert、Humphrey A. Moynihan、Kurt T. Lorenz、Marie Kissane、Orla A. McNamara、Anita R. Maguire
DOI:10.1021/op200030t
日期:2011.9.16
The palladium-catalyzed decarboxylative cross-coupling of aminothiophene carboxylate and 1-bromo-4-chlorobenzene to produce 3-amino-2-(4-chlorophenyl)thiophene (2) is described. The cross-coupling proceeds under relatively mild conditions using catalytic Pd(0) and TBAB. Through use of a mixed-solvent system of DMF and NMP, it was possible to operate the cross-coupling system at 80 degrees C. An assessment of carbon dioxide liberation, which provides insight into the reaction operating parameters, is also discussed.
Substituted thiophene derivative and agricultural and horticultural fungicide containing the same as active ingredient
申请人:MITSUI CHEMICALS, INC.
公开号:EP0737682B1
公开(公告)日:2002-01-09
US5747518A
申请人:——
公开号:US5747518A
公开(公告)日:1998-05-05
Substituted thiophene derivative and agricultural and horticultural
申请人:Mitsui Toatsu Chemicals, Inc.
公开号:US05747518A1
公开(公告)日:1998-05-05
The substituted thiophene derivative of the invention which is represented by the general formula (1) has a broad disease spectrum for a pathogenic fungus of various crops, exhibits an excellent controlling effect on disease such as gray mold, powdery mildew and rust in particular, and is also effective for a resistant fungus of conventional fungicides which has become a serious problem, and consequently is useful for an agricultural and horticultural fungicide. ##STR1##