Uma série de novas pirazolinas N-acil trialometiladas derivadas de ésteres metílicos de ácidos graxos foi sintetizada por reação de ciclocondensação entre hidrazidas graxas e 4-alcóxi-1,1,1‑trialometil-3-alquen-2-onas. Ciclizações eficientes e regioespecíficas catalisadas por BF3·MeOH levaram aos produtos desejados em rendimentos de bons a excelentes e alto grau de pureza.A series of new fatty N-acyl trihalomethylated pyrazoline derivatives from fatty acid methyl esters was synthesized by the cyclocondensation of respective fatty hydrazides with 4-alkoxy-1,1,1‑trialomethyl-3-alquen-2-ones. Efficient and regiospecific cyclizations catalyzed by BF3·MeOH gave the desired products in good to excellent yields and at high purity
Regioselective Synthesis of Multisubstituted Pyrazoles via Cyclocondensation of β-Thioalkyl-α,β-Unsa...
3(5)-Carbomethoxy-4-arylpyrazoles can be easily obtained by aromatization with boron trifluoride eth...
The preparation of N-methylpyrazoles is usually accomplished through reaction of a suitable 1,3-dike...
A novel series of twelve heteroaroyl-2-pyrazolines trihalomethyl and substituted heteroaryl, as non-...
Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis paper presents a new synthetic route...
Abstract – Trifluoromethyl group substituted pyrazole derivatives were prepared from hydrazines and ...
Reaction of 1,1,1-trichloro-4-methoxy-3-penten-2-one (1) with hydrazines (2a-h) (NH2NHR, R = H, Me, ...
Acylation of N-Boc-N-methylhydrazones followed by TFA treatment affords regioselective access to sub...
A number of trifluoromethylated 3-(pyrazolyl)indoles was synthesized from 2-(trifluoromethyl)comanic...
Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis work describes a general methodology...
Conselho Nacional de Desenvolvimento Científico e TecnológicoThis work presents a simple and versati...
Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqThis study shows the ...
Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis work describes the synthesis of a ne...
The synthesis of 1,2-bis(5'-trihalomethylisoxazol-3'-yl)ethanes (3-6) and 1,2-bis(5'-trihalomethylpy...
AbstractA regioselective synthesis of 3-trifluoromethyl-1-phenyl-1H-pyrazoles (1,3-isomers) as well ...
Regioselective Synthesis of Multisubstituted Pyrazoles via Cyclocondensation of β-Thioalkyl-α,β-Unsa...
3(5)-Carbomethoxy-4-arylpyrazoles can be easily obtained by aromatization with boron trifluoride eth...
The preparation of N-methylpyrazoles is usually accomplished through reaction of a suitable 1,3-dike...
A novel series of twelve heteroaroyl-2-pyrazolines trihalomethyl and substituted heteroaryl, as non-...
Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis paper presents a new synthetic route...
Abstract – Trifluoromethyl group substituted pyrazole derivatives were prepared from hydrazines and ...
Reaction of 1,1,1-trichloro-4-methoxy-3-penten-2-one (1) with hydrazines (2a-h) (NH2NHR, R = H, Me, ...
Acylation of N-Boc-N-methylhydrazones followed by TFA treatment affords regioselective access to sub...
A number of trifluoromethylated 3-(pyrazolyl)indoles was synthesized from 2-(trifluoromethyl)comanic...
Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis work describes a general methodology...
Conselho Nacional de Desenvolvimento Científico e TecnológicoThis work presents a simple and versati...
Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqThis study shows the ...
Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis work describes the synthesis of a ne...
The synthesis of 1,2-bis(5'-trihalomethylisoxazol-3'-yl)ethanes (3-6) and 1,2-bis(5'-trihalomethylpy...
AbstractA regioselective synthesis of 3-trifluoromethyl-1-phenyl-1H-pyrazoles (1,3-isomers) as well ...
Regioselective Synthesis of Multisubstituted Pyrazoles via Cyclocondensation of β-Thioalkyl-α,β-Unsa...
3(5)-Carbomethoxy-4-arylpyrazoles can be easily obtained by aromatization with boron trifluoride eth...
The preparation of N-methylpyrazoles is usually accomplished through reaction of a suitable 1,3-dike...