β-Cyclodextrin as a Biomimetic Catalyst for the Efficient Synthesis of 4-Oxo-pyrido[1,2-a] Pyrimidine-3-Carbonitrile in Aqueous Medium
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DOI: 10.1007/s10562-017-1983-y
Abstract: Supramolecular β-cyclodextrin as a highly efficient, biodegradable, and reusable catalyst for the synthesis of 4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbonitrile derivatives (4a–s) is investigated via a cascade reaction of aldehydes, malanonitrile and 2-aminopyridine in aqueous medium at 65 °C under ultrasonication.… read more here.
Keywords: oxo pyrido; pyrimidine carbonitrile; pyrido pyrimidine; catalyst ... See more keywords
Direct synthesis of 2-oxo-acetamidines from methyl ketones, aromatic amines and DMF via copper-catalyzed C(sp3)–H amidination
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DOI: 10.1039/c9ra00616h
Abstract: A convenient method for the synthesis of 2-oxo-acetamidines from methyl ketones using aromatic amines and DMF as nitrogen sources is reported via copper-catalyzed C(sp3)–H amidination. read more here.
Keywords: acetamidines methyl; synthesis oxo; amines dmf; aromatic amines ... See more keywords
Sulfamic acid promoted one-pot multicomponent reaction: a facile synthesis of 4-oxo-tetrahydroindoles under ball milling conditions
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DOI: 10.1039/c9ra08478a
Abstract: We report an efficient and facile one-pot synthesis of 4-oxo-tetrahydroindoles using sulfamic acid under ball milling conditions. read more here.
Keywords: ball milling; oxo tetrahydroindoles; milling conditions; one pot ... See more keywords
Synthesis of 2-Oxo-Pyridines Catalyzed by Biosynthesized CuO Nanoparticles
Sign Up to like & getrecommendations! Published in 2019 at "Polycyclic Aromatic Compounds"
DOI: 10.1080/10406638.2018.1559206
Abstract: Abstract Nano-CuO has been used as an efficient catalyst for the preparation of pyridine derivatives by four-component reaction of hydrazine hydrate, ethyl cyanoacetate, malononitrile, and aldehydes. The present synthetic protocol provides several advantages such as… read more here.
Keywords: cuo; biosynthesized cuo; pyridines catalyzed; catalyzed biosynthesized ... See more keywords
An Alternative Approach towards C-12 Functionalized Scalaranic Sesterterpenoids Synthesis of 17-Oxo-20-norscalaran-12α,19-O-lactone
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DOI: 10.3390/md19110636
Abstract: Scalarane sesterterpenoids emerged as interesting bioactive natural products which were isolated extensively from marine sponges and shell-less mollusks. Some representatives were also reported recently from superior plants. Many scalarane sesterterpenoids displayed a wide spectrum of… read more here.
Keywords: oxo norscalaran; synthesis oxo; synthesis; norscalaran lactone ... See more keywords