7267-75-6Relevant academic research and scientific papers
TfOH mediated intermolecular electrocyclization for the synthesis of pyrazolines and its application in alkaloid synthesis
Annes, Sesuraj Babiola,Vairaprakash, Pothiappan,Ramesh, Subburethinam
, p. 30071 - 30075 (2018/09/11)
TfOH mediated easy access to interesting pyrazolines starting from an aldehyde, phenylhydrazine and styrene has been developed. The scope of this synthetic methodology has been explored by synthesizing various 1,3,5-trisubstituted pyrazolines in very good yields with very high regioselectivity. The origin of regioselectivity has been explained by comparing the stability of possible intermediate carbocations. The synthetic utility of a green solvent has been explored by synthesizing some of pyrazolines in a DES medium. The synthetic application of the present methodology is employed in the synthesis of a pyrazoline alkaloid.
SYNTHESIS AND ABSORPTION-FLUORESCENCE PROPERTIES OF 1,4-BIS(Δ2-PYRAZOLIN-3-YL)- AND 1,4-BIS(3-PYRAZOLYL)BENZENES
Tokmakov, G.P.,Udachin, Yu.M.,Patalakha, N.S.,Denisov, L.K.,Lantsov, A.M.,Grandberg, I.I.
, p. 66 - 70 (2007/10/02)
1,4-Bis(Δ2-pyrazolin-3-yl)benzene derivatives were synthesized by the reaction of dibenzal-p-diacetylbenzene or 1,4-bis(β-dimethylaminopropionyl)benzene with various hydrazines.Some of these derivatives were converted to the corresponding 1,4-b
