Research on Chemical Intermediates p. 8343 - 8354 (2015)
Update date:2022-08-04
Topics:
Vafaee, Asieh
Davoodnia, Abolghasem
Pordel, Mehdi
A fast, green, and efficient method for high-yielding synthesis of 4,4′-(arylmethylene)bis(3-methyl-1H-pyrazol-5-ols) by one-pot reaction of two equivalents of 3-methyl-1H-pyrazol-5(4H)-one with aryl aldehydes, using 12-tungstophosphoric acid (H3PW12O40) as an effective and inorganic catalyst is described. The catalyst is inexpensive and readily available and can be recovered conveniently and reused efficiently such that a considerable catalytic activity still could be achieved after the tenth run. Compared to the other methods, the present methodology offers several advantages such as excellent yields, short reaction times, and mild reaction conditions with an easy work-up.
View MoreTAIXING BEST NEW MATERIALS CO., LTD
Contact:0523-87998158;
Address:No.18 Zhonggang Road,Taixing City ,Jiangsu , China
website:http://www.win-winchemical.com
Contact:0086-577-64498589
Address:6F, No. 396 Xingping Road, Longwan Industrial Zone, Wenzhou City, Zhejiang, 325000 P.R.China
Shaanxi HuaTai Bio-fine chemical company Ltd
Contact:86-029-87862197
Address:No. 5, 3rd Floor, 29 Yanta North Road, Beilin Dist.
Shanghai ZaiQi Bio-Tech Co., Ltd.,
Contact:+86-21-5482 4098
Address:Bldg. No.7, No.201 MinYi Rd,Songjiang CaoHeJing High-Tech Park Shanghai 201516 P,R,China
Reliable Pharma Technology (Shanghai) Co., Ltd.
Contact:0086-21-67676847-8008
Address:Lane 1500, No.68, Xinfei Road, Songjiang District, Shanghai, 201611, P.R.China.
Doi:10.1246/bcsj.65.2394
(1992)Doi:10.1016/j.bmcl.2014.07.047
(2014)Doi:10.1021/jm3014458
(2013)Doi:10.1002/anie.201303003
(2013)Doi:10.1016/j.dyepig.2012.10.014
(2013)Doi:10.1021/jm00101a007
(1992)