Mesoporous SBA-15 Silica Phenylsulfonic Acid (SBA-15-Ph-SO3H) as Efficient Nanocatalyst for One-pot Three-component Synthesis of 3-Methyl-4-aryl-2,4,5,7-tetrahydropyrazolo[3,4-b]pyridine-6-ones
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Heterocyclic Chemistry"
DOI: 10.1002/jhet.2689
Abstract: A simple, economical, and efficient approach to the one-pot synthesis of 3-methyl-4-aryl-2,4,5,7-tetrahydropyrazolo[3,4-b]pyridine-6-ones by multicomponent assembling of 5-methylpyrazol-3-amine, aldehydes, and Meldrum's acid using mesoporous silica phenylsulfonic acid (SBA-15-Ph-SO3H) as recyclable and heterogonous solid acid nanocatalyst has… read more here.
Keywords: sba; synthesis methyl; aryl tetrahydropyrazolo; one pot ... See more keywords
An Efficient Synthesis of 6′‐methyl‐1'H‐spiro[indoline‐3,4′‐pyrimidine]‐2,2′(3'H)‐dione Derivatives
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DOI: 10.1002/jhet.2944
Abstract: The reactions of isatins, urea and 1-(piperidin-1-yl)butane-1,3-dione or 1-morpholinobutane-1,3-dione have been developed for the preparation of spiroheterocycles compounds. It was found these reactions could be given higher yields and required shorter time in our process.… read more here.
Keywords: dione; efficient synthesis; methyl spiro; spiro indoline ... See more keywords
One-pot efficient synthesis of methyl carbamate by M5Ca5(PO4)6F2 (M = Co, Ni, Cu, Zn) catalysts
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DOI: 10.1016/j.catcom.2019.04.023
Abstract: Abstract A facile and efficient one-pot synthesis of methyl carbamate (MC) by urea and methanol was studied using metal modified fluorapatite as a catalyst. M5Ca5(PO4)6F2 (M5FAP, M = Co, Ni, Cu, Zn) was synthesized by co-precipitation. Among… read more here.
Keywords: synthesis methyl; methyl carbamate; synthesis; m5ca5 po4 ... See more keywords
An efficient multifunctional catalyst for one-pot synthesis of methyl isobutyl ketone: Phosphor-doped h-BN with adjustable acid-base property as support
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DOI: 10.1016/j.catcom.2020.106276
Abstract: Abstract Developing multifunctional catalyst for cascade reactions such as one-pot synthesis of methyl isobutyl ketone (MIBK) from acetone and hydrogen is critical for practical applications. Here, we adjusted the acid-base property by doping phosphor into… read more here.
Keywords: pot synthesis; synthesis methyl; phosphor; methyl isobutyl ... See more keywords
Synthesis of 26-methyl cholestane and identification of cryostanes in mid-Neoproterozoic sediments
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DOI: 10.1016/j.orggeochem.2017.11.006
Abstract: Abstract The biomarker distributions of mid-Neoproterozoic sediments (800–717 million yr, Ma) from various locations are characterized by the occurrence, besides cholestane isomers, of a novel series of C28 steranes, whereas classical C-24 alkylated steranes are absent.… read more here.
Keywords: mid neoproterozoic; synthesis methyl; cholestane; identification ... See more keywords
Spiroisoxazoline Inhibitors of Acetylcholinesterase from Pseudoceratina verrucosa. Quantitative Chiroptical Analysis of Configurational Heterogeneity, and Total Synthesis of (±)-Methyl Purpuroceratate C.
Sign Up to like & getrecommendations! Published in 2022 at "Journal of natural products"
DOI: 10.1021/acs.jnatprod.2c00595
Abstract: Examination of the MeOH extract of the sponge, Pseudoceratina cf. verrucosa, Berquist 1995 collected near Ningaloo Reef, Western Australia for selective acetylcholinesterase (AChE) inhibitors, yielded five new bromotyrosine alkaloids, methyl purpuroceratates A and B (1b… read more here.
Keywords: sio; synthesis methyl; methyl purpuroceratate; pseudoceratina verrucosa ... See more keywords
Optimization of Process and Improvement in Continuous Production of Synthesis of Methyl Anthranilate
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DOI: 10.3303/cet2081024
Abstract: The synthesis of methyl anthranilate (MA) from phthalimide is widely used in the production of sodium saccharin because of its accessible raw materials and stable products. In the traditional semi-batch production mode, difficulties to control… read more here.
Keywords: synthesis methyl; synthesis; process; production ... See more keywords