A Rapid and an Efficient Route to the One-pot, Multicomponent Synthesis of 1<i>H</i>-Pyrazolo[1,2-<i>b</i>]phthalazine-5,10-dione Ring Systems
作者:Mazaahir Kidwai、Ritika Chauhan
DOI:10.1002/jhet.1809
日期:2014.11
CAN is found to be an efficient catalyst for the synthesis of 1H‐pyrazolo[1,2‐b]phthalazine‐5,10‐dione derivatives via one‐pot coupling reaction of phthalhydrazide, aromatic aldehydes, and malononitrile or ethyl cyanoacetate in PEG as solvent. The major attributes of this synthetic protocol are the use of nontoxic, inexpensive, and readily available catalyst, mild conditions, easy work up, improved
CAN是通过邻苯二甲酰肼,芳族醛,丙二腈或氰基乙酸乙酯在PEG中的一锅偶联反应合成1 H-吡唑并[1,2 - b ]酞嗪-5,10-二酮衍生物的有效催化剂作为溶剂。该合成方案的主要属性是使用无毒,廉价且易于获得的催化剂,温和的条件,易于后处理,提高的收率,以及PEG 400作为对环境无害且可回收的溶剂。
Efficient and convenient synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives mediated by L-proline
作者:Harendra Nath Roy、Masud Rana、Abu Zafar Al Munsur、Kee-In Lee、Ashis K. Sarker
DOI:10.1080/00397911.2016.1192650
日期:2016.8.17
ABSTRACT An efficient, four-component, one-pot condensation reaction of phthalimide or phthalic anhydride, aromatic aldehydes, and ethyl cyanoacetate for the synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives mediated by L-proline in excellent yields is reported. GRAPHICAL ABSTRACT
摘要 邻苯二甲酰亚胺或邻苯二甲酸酐、芳香醛和氰乙酸乙酯的高效、四组分、一锅缩合反应,用于合成由 L 介导的 1H-吡唑并[1,2-b]酞嗪-5,10-二酮衍生物-脯氨酸的产率很高。图形概要
A highly efficient green synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives and their photophysical studies
作者:Dushyant Singh Raghuvanshi、Krishna Nand Singh
DOI:10.1016/j.tetlet.2011.08.111
日期:2011.10
for an efficientsynthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones by one-pot cyclocondensation reaction of phthalhydrazide, aromatic aldehydes, and malononitrile or ethyl cyanoacetate under microwave irradiation. The advantages of this method include the use of green catalyst, no organic solvent, easy work-up and excellent yields. The photophysical properties for some 1H-pyrazolo[1,2-b]phthalazine-5
特定任务的离子型液体,[BMIM] OH,已被用于为1的有效合成ħ -吡唑并[1,2- b ]酞嗪-5,10-二酮通过邻苯二甲酰的一锅反应环化缩合,芳族醛,微波辐射下的丙二腈或氰基乙酸乙酯。该方法的优点包括使用绿色催化剂,不使用有机溶剂,易于后处理和优异的收率。首次研究了一些1 H-吡唑并[1,2 - b ]酞嗪-5,10-二酮衍生物的光物理性质。
Ultrasound-assisted one-pot, three-component synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones
Triethylamine was found to be an efficientcatalyst for the synthesis of 1H-pyrazolo[1,2-b]phthalazine-5,10-diones by one-pot reaction of phthalhydrazide, aromatic aldehydes, and malononitrile or ethyl cyanoacetate in ethanol under ultrasonic irradiation. The advantages of this method are the use of an inexpensive and readily available catalyst, easy workup, improved yields, and the use of ethanol