4-氯苯甲醛 、 3-甲基-2-吡唑啉-5-酮 在
Santa Barbara Amorphous modified with propylsulfonic acid groups 作用下,
以
neat (no solvent) 为溶剂,
反应 0.07h,
以95%的产率得到4,4'-((4-chlorophenyl)methylene)bis(3-methyl-1H-pyrazol-5-ol)
参考文献:
名称:
SBA-Pr-SO 3 H催化合成联吡唑类化合物作为抗菌剂和磷酸化RET酪氨酸激酶抑制剂
摘要:
在室温下,通过乙酰乙酸乙酯与水合肼在EtOH中的反应制备吡唑啉酮。然后,在SBA-Pr-SO 3存在下,使两当量的吡唑啉酮和一当量的醛反应,合成了作为有吸引力的生物活性化合物的双吡唑衍生物。H在无溶剂条件下于120°C加热。反应时间短(3–6分钟),而产物的收率高(85–97%)。使用Discovery Studio 2.5(Accelrys Inc,美国加利福尼亚州圣地亚哥)将化合物与蛋白质对接。分子对接(GOLD方法)研究表明,吡唑与RET激酶有效结合。接下来,通过圆盘扩散法测试了联吡唑对某些革兰氏阳性和革兰氏阴性细菌的生物学活性以及抗真菌活性。所有化合物均未显示出明显的抗菌活性,但其中两种化合物显示出对白色念珠菌的良好活性。 图形概要
Sulfonated Honeycomb Coral (HC-SO3H): a new, green and highly efficient heterogeneous catalyst for the rapid one-pot pseudo-five component synthesis of 4,4′-(aryl methylene) bis(3-methyl-1H-pyrazol-5-ol)s
作者:Roya Jahanshahi、Batool Akhlaghinia
DOI:10.1007/s11696-016-0127-y
日期:2017.7
Honeycomb Coral with chlorosulfonic acid as sulfonating agent. The as-synthesized catalyst was characterized via XRF, FT-IR, TGA, SEM–EDS, XRD, BET and pH analysis. The superior catalytic activity of HC-SO3H was investigated for the synthesis of 4,4′-(aryl methylene)bis(3-methyl-1H-pyrazol-5-ol) derivatives through the one-pot pseudo-five component reactions. The main advantages of this protocol include
Sulfonated nanohydroxyapatite functionalized with 2-aminoethyl dihydrogen phosphate (HAP@AEPH<sub>2</sub>-SO<sub>3</sub>H) as a new recyclable and eco-friendly catalyst for rapid one-pot synthesis of 4,4′-(aryl methylene)bis(3-methyl-1H-pyrazol-5-ol)s
作者:Monireh Zarghani、Batool Akhlaghinia
DOI:10.1039/c5ra16236j
日期:——
evaluated for the synthesis of 4,4′-(aryl methylene)bis(3-methyl-1H-pyrazol-5-ol)s via one-pot reactions of phenylhydrazine/or hydrazine hydrate, ethyl acetoacetate and aldehydes under solvent-free conditions. This catalyst showed notable advantages, such as environmental friendliness, excellent yields, shorter reaction time, reusability of the inexpensive catalyst and easy workupprocedure.
AN ECO-FRIENDLY ONE-POT SYNTHESIS OF 4,4'-(ARYLMETHYLENE)BIS(1H-PYRAZOL-5-OLS) USING [Et3NH][HSO4] AS A RECYCLABLE CATALYST
作者:ZHONGQIANG ZHOU、YULIANG ZHANG
DOI:10.4067/s0717-97072015000300003
日期:——
work-up and eco-friendly reaction conditions. Keywords : 4,4′-(Arylmethylene)bis(1H-pyrazol-5-ols); [Et 3 NH][HSO 4 ]; Solvent-free; Multicomponent reaction INTRODUCTION 4,4′-(Arylmethylene)bis(1H-pyrazol-5-ols) are applied as fungicides 1 , pesticides 2 and dyestuffs 3 . The condensation of aldehydes with two equivalents of 3-methyl-1-phenyl-5- pyrazolone is a conventional chemical approach to 4,4′-
Chickpea leaf exudates: a green Brønsted acid type biosurfactant for bis(indole)methane and bis(pyrazolyl)methane synthesis
作者:Rupesh C. Patil、Shashikant A. Damate、Dnyandev N. Zambare、Suresh S. Patil
DOI:10.1039/d1nj00382h
日期:——
A clean and highly efficient protocol for green synthesis of bis(indole)methanes and bis(pyrazolyl)methanes has been successfully achieved by using a naturally sourced bio-surfactant, chickpea leaf exudates (CLE), as a Brønsted acid-type catalyst. The reaction proceeds smoothly with CLE in alcoholic medium at 60 °C in a very short reaction time, and therefore it is a green, environmentally sound alternative
Pyrazolone was prepared through the reaction of ethyl acetoacetate and hydrazine hydrate in EtOH at room temperature. Then, bispyrazole derivatives, as attractive biologically active compounds, were synthesized by reacting two equivalents of prepared pyrazolone and one equivalent of aldehyde in the presence of SBA-Pr-SO3H under solvent-free condition at 120 °C. The reaction time was short (3–6 min), while
在室温下,通过乙酰乙酸乙酯与水合肼在EtOH中的反应制备吡唑啉酮。然后,在SBA-Pr-SO 3存在下,使两当量的吡唑啉酮和一当量的醛反应,合成了作为有吸引力的生物活性化合物的双吡唑衍生物。H在无溶剂条件下于120°C加热。反应时间短(3–6分钟),而产物的收率高(85–97%)。使用Discovery Studio 2.5(Accelrys Inc,美国加利福尼亚州圣地亚哥)将化合物与蛋白质对接。分子对接(GOLD方法)研究表明,吡唑与RET激酶有效结合。接下来,通过圆盘扩散法测试了联吡唑对某些革兰氏阳性和革兰氏阴性细菌的生物学活性以及抗真菌活性。所有化合物均未显示出明显的抗菌活性,但其中两种化合物显示出对白色念珠菌的良好活性。 图形概要