60423-64-5Relevant academic research and scientific papers
Tungsten oxides: green and sustainable heterogeneous nanocatalysts for the synthesis of bioactive heterocyclic compounds
Siddiqui,Shaikh, Shoyebmohamad F.,Totawar, Balaji B.,Dumpala, Madhuri,Ubaidullah, Mohd,Thamer, Badr M.,Mane, Rajaram S.,Al-Enizi, Abdullah M.
, p. 2032 - 2041 (2021)
Tungsten oxide (WO3) as an efficient heterogeneous catalyst was preparedviaa simple hydrothermal route for the synthesis of a wide range of bioactive heterocyclic compounds. The present investigation deals with the rapid and low-cost synthesis
HFIP Promoted C3 Alkylation of Lawsone and 4-Hydroxycoumarin with Alcohols by Dehydrative Cross-Coupling
Chen, Yixin,Wang, Yurong,Zhong, Rong,Li, Jinshan
, p. 10638 - 10647 (2020/09/23)
An environmentally benign system for the direct alkylation of lawsones and 4-hydroxycoumarins with alcohols in 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) is reported. The reaction proceeded smoothly via a dehydrative cross-coupling process by utilizing the unique properties of HFIP. A variety of alkylated products and subsequent one-pot cyclized products (pyranonaphthoquinones and pyranocoumarins) could be obtained in 40-93% yields.
Fe(ClO4)3·×H2O-Catalyzed direct C-C bond forming reactions between secondary benzylic alcohols with different types of nucleophiles
Thirupathi, Ponnaboina,Kim, Sung Soo
experimental part, p. 2995 - 3003 (2010/06/14)
Fe(ClO4)3·×H2O as a highly effective catalyst for benzylation of 1,3-dikones, β-ketoesters, 1,3-diesters, electron-rich arenes and heteroarenes and 4-hydroxycoumarin with various benzylic alcohols is described. The usefulness of this procedure is shown by a synthesis of bis-symmetrical triarylmethanes and one step synthesis of an anti-coagulant compound 4-hydroxy-3-(1,2,3,4-tetrahydronaphthalen-1-yl)-2H-chromen-2-one (Coumatetralyl (B)). The advantages of this protocol are broad scope, mild conditions, use of inexpensive catalyst and simplicity of operation since water is the only side product.
Benzylation of β-dicarbonyl compounds and 4-hydroxycoumarin using TMSOTf catalyst: A simple, mild, and efficient method
Theerthagiri, Palani,Lalitha, Appaswami
supporting information; experimental part, p. 5454 - 5458 (2010/11/02)
The direct benzylation of 1,3-dicarbonyl compounds and 4-hydroxycoumarin with a wide variety of benzylic alcohols was achieved using trimethylsilyl trifluoromethanesulfonate as an efficient catalyst. The reaction proceeded under very mild conditions at ro
