Zhou, Yin; Gao, Cheng-Feng; Ma, Hai; Nie, Jing; Ma, Jun-An; Zhang, Fa-Guang published the artcile< Quadruple Functionalized Pyrazole Pharmacophores by One-pot Regioselective [3+2] Cycloaddition of Fluorinated Nitrile Imines and Dicyanoalkenes>, HPLC of Formula: 17082-09-6, the main research area is difluoromethyl aryl hydrazonyl chloride dicyanialkene regioselective cycloaddition cyclooxygenase inhibition; aryl difluoromethyl cyanopyrazole preparation; trifluroromethylaryl hydrazonyl chloride dicyanialkene regioselective cycloaddition cyclooxygenase inhibition; trifluoromethyl aryl cyanopyrazole preparation; COX-2 inhibitors; cycloaddition; di/trifluoromethyl group; pharmacophores; pyrazoles.
A quadruple functionalization approach for the modular construction of fully substituted N1-aryl 3-di/trifluoro-methyl-4/5-cyanopyrazole pharmacophores from readily available hydrazonyl chlorides and dicyanoalkenes was presented. The realization of this [3+2] cycloaddition reaction hinges upon the employment of N-aryl di/trifluoromethyl nitrile imines as the 1,3-dipoles to bypass external synthetic steps and dicyanoalkenes as the dipolarophiles to tune the regioselectivity. This one-pot strategy offered access to a divergent library of cyano analogs of prevalent 3-di/trifluoromethyl pyrazole pharmacophores, among which several compounds have shown potent inhibitory activity towards cyclooxygenase 2 (COX-2) compared with marketed drug Celecoxib.
Chemistry – An Asian Journal published new progress about [3+2] Cycloaddition reaction (regioselective). 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, HPLC of Formula: 17082-09-6.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics