118665-00-2Relevant academic research and scientific papers
Preparation method of dichlorotoluene nitride intermediate
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Sheet 0045-0046; 0054; 0065, (2021/01/28)
The invention belongs to the technical field of preparation of pesticide intermediates, and particularly discloses a preparation method of a dichlorotoluene nitride intermediate. The preparation method comprises the following steps: fully reacting raw materials, a solvent and a nitration reagent to obtain a dichlorotoluene nitride intermediate, wherein the raw materials comprise any one of o-dichlorotoluene, m-dichlorotoluene and p-dichlorotoluene; the solvent is dichloroethane; the nitration reagent is concentrated nitric acid; the dichlorotoluene nitride intermediate is shown as a chemical formula 7 and a chemical formula 12. The preparation method has the advantages that the corrosion to reaction equipment is less, and the generation and discharge of waste acid and waste salt in the production process are greatly reduced.
Cardiotonic Agents. Synthesis and Cardiovascular Properties of Novel 2-Arylbenzimidazoles and Azabenzimidazoles
Guengoer, Timur,Fouquet, Andre,Teulon, Jean-Marie,Provost, Daniel,Cazes, Michele,et al.
, p. 4455 - 4463 (2007/10/02)
Novel 2-arylbenzimidazoles and azabenzimidazoles were synthesized, and their inotropic action was evaluated.Changes in left ventricular pressure, dP/dt max, were measured as an index of cardiac contractility.The structural features that impart optimal inotropic activity are presented.The most potent compounds were evaluated orally in conscious dogs with implanted Konigsberg pressure transducers.To investigate the mechanism of action, the most potent compounds were tested for their calcium-sensitizing properties and their potential for the inhibition of phosphodiesterase.Two compounds, 1 and 41, showed interesting in vitro and oral activity without side effects.They have a more potent calcium-sensitizing effect than MCI-154 and are under further investigation.
