StarchSulfuric Acid (SSA) as Catalyst for a One-Pot Synthesis of 1,5-Diaryl-1<i>H</i>-pyrazoles
作者:Farhad Hatamjafari
DOI:10.1002/hlca.201200621
日期:2013.8
Protocols with starchsulfuricacid (SSA) as reusable catalyst for the synthesis of aryl‐1H‐pyrazoles are described. SSA acted as an efficient and environmentally friendly catalyst for the regioselective condensation of BaylisHillman adducts 1 with phenylhydrazine hydrochloride leading to the new 1,5‐diaryl‐1H‐pyrazole 2a–2e in excellent yields (Scheme and Table 1).
A Green, Reusable and Highly Efficient Heterogeneous Catalyst for the Synthesis of Arylpyrazoles using Nano-Fe2O3
作者:Farhad Hatamjafari
DOI:10.13005/ojc/280120
日期:2012.3.18
Series of some new arylpyrazole derivatives have been synthesized in good yields via one-pot condensation reaction using nano-Fe 2 O 3 as heterogeneouscatalyst.
使用纳米Fe 2 O 3作为非均相催化剂,通过一锅缩合反应以高收率合成了一系列新的芳基吡唑衍生物。
Microwave Assisted Synthesis of Arylpyrazoles Using Montmorillonite K-10
作者:Farhad Hatamjafari
DOI:10.14233/ajchem.2013.13306
日期:——
Montmorillonite K-10 clay catalyzed Friedlander condensation of Baylis-Hillman adducts with phenyl hydrazine hydrochloride afforded 1,5-diarylpyrazoles.