Results 81 to 90 of about 1,947 (193)

Synthesis of functionalized tetrahydro-dispiro[pyrazolone 4, 2′-pyran-5′, 4″-pyrazolone] scaffolds via an Oxa-Michael-initiated cascade [4 + 2] annulation reaction using pyrazoledione-derived MBH-alcohols

Results in Chemistry
In this study, an efficient protocol was developed for synthesizing tetrahydro-dispiro[pyrazolone 4, 2′-pyran-5′, 4″-pyrazolone] scaffolds, using pyrazoledione-derived MBH alcohols and arylidene pyrazolones.
Xiaoming Zhou, Juan Du, JiPeng Yuan, Xuehan Wang, Hongli Yang, Xuekun Wang, Zhenzhen Gao   +6 more
doaj   +1 more source

Ozonolysis of Enol Ethers 9. Synthesis and Ozonolysis of 5,6,7,8-Tetrahydrochroman [PDF]

, 1995
Die Regioselektivität der Übertragung der drei Ozonsauerstoffe auf die beiden olefinischen Kohlenstoffe im starren, substituierten Enolether 5,6,7,8-Tetrahydrochroman (3) wird durch Isolierung des w-Caprinolactons 5 anstelle des früher postulierten ...
Beljan, Petra, Schank, Kurt
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Regio- and stereospecific assembly of dispiro[indoline-3,3′-pyrrolizine-1′,5′′-thiazolidines] from simple precursors using a one-pot procedure : synthesis, spectroscopic and structural characterization, and a proposed mechanism of formation [PDF]

, 2020
The authors thank 'Centro de Instrumentación Científico-Técnica of Universidad de Jaén' for data collection. The authors thank COLCIENCIAS, Universidad del Valle, the Consejería de Innovación, Ciencia y Empresa (Junta de Andalucía, Spain) and the ...
Cobo, Justo, Glidewell, Christopher, Quiroga, Jairo, Romo, Pablo   +3 more
core   +1 more source

In vitro and in vivo activity of 3-alkoxy-1,2-dioxolanes against Schistosoma mansoni [PDF]

, 2017
Objectives Compounds characterized by a peroxidic skeleton are an interesting starting point for antischistosomal drug discovery. Previously a series of 3-alkoxy-1,2-dioxolanes, which are chemically stable cyclic peroxides, demonstrated significant in ...
Benner, Evan, Dussault, Patrick H., Ingram, Katrin, Keiser, Jennifer, Schiaffo, Charles E., Sittiwong, Wantanee   +5 more
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Boletín oficial de la provincia de León: Num. 41 (05/04/1918) [PDF]

, 1918
Copia digital. Valladolid : Junta de Castilla y León.
León (Provincia). Diputación Provincial
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Crystal structures of two 2,9-dithia-13-azadispiro[4.1.47.35]tetradecan-6-ones

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the title compounds 4,11-dihydroxy-13-methyl-1,8-di-p-tolyl-2,9-dithia-13- azadispiro[4.1.47.35]tetradecan-6-one, C26H31NO3S2, (I), and 13-benzyl-4,11-dihydroxy-1,8-bis(4-methylphenyl)-2,9-dithia-13-azadispiro[4.1.47.35]tetradecan-6-one, C32H35NO3S2, (
Vijayan Viswanathan, Shanmugavel Bharkavi, Subbu Perumal, Devadasan Velmurugan   +3 more
doaj   +1 more source

Dispiro[cyclopropane-1,5′-endo-tricyclo[5.2.1.02,6]deca-3,8-diene-10′,1′′-cyclopropane]

Acta Crystallographica Section E, 2010
The title compound, C14H16, is built up from three five-membered rings. Two of the five-membered rings display an envelope conformation and the third one is almost planar (r.m.s. deviation = 0.014 Å).
Rafał Grubba, Łukasz Ponikiewski, Jerzy Pikies   +2 more
doaj   +1 more source

Nomenclature for the C60-Ih and C70-D5h(6) fullerenes (IUPAC Recommendations 2002) [PDF]

, 2017
Fullerenes are a new allotrope of carbon characterized by a closed-cage structure consisting of an even number of three-coordinate carbon atoms devoid of hydrogen atoms.
Cozzi, F., Hwu, R. J.-R, Moss, G. P., Powell, W. H., Thilgen, C., Yerin, A.   +5 more
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Synthesis and Cytotoxic Activity of Curcumin Analogues [PDF]

, 2013
Tiga senyawa analog kurkumin (1-3) disintesis melaluireaksi 1-metilpiperidin-4-one dan turunan metoksibenzaldehidapada iradiasi gelombang micro. Natriumhidroksida digunakan sebagai katalis.
Eryanti, Y. (Y), Herlina, T. (T), Hidayah, N. (N), Zamri, A. (A)   +3 more
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Part I. A Novel Synthesis of Dihydrojasmone. Part II. Polymethyleneketenedimers and Trimers. [PDF]

, 1965
Part I. A Novel Synthesis of Dihydrojasmone. — 3-Methylcyclopent-2-en-2-ol-l-one, a readily available substance of natural occurrence, was utilized in the synthesis of the well-known dihydrojasmone (2-n-aniyl-3-methylcyclopent-2-en-l-one).
Collins, Frank E., Jr
core   +2 more sources