Results 21 to 30 of about 400 (141)
The head-to-head photodimer of indenoindene
IUCrData, 2020 Irradiation of 1-(1-benzocyclobutenylidene)benzocyclobutene gives indenoindene and its head-to-head photodimer nonacyclo[9.7.7.72,10.01,11.02,10.03,8.012,17.019,24.026,31]dotriaconta-3,5,7,12,14,16,19,21,23,26,28,30-dodecaene, C32H24.
Heiner Detert +2 more
doaj +1 more source
Molecules, 2005 Preparation in excellent yields of cyclobutyl benzofuran-2-yl- and naphthofuran- 2-yl-ketones, the corresponding ketoximes and thiosemicarbazones, ether derivatives of the ketoximes and thiazoles derived from the thiosemicarbazones are described.
Cavit Kazaz +3 more
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Crystal structure of r-1,c-2-dibenzoyl-t-3,t-4-bis(2-nitrophenyl)cyclobutane
Acta Crystallographica Section E: Crystallographic Communications, 2017 The condensation reaction of acetophenone (1-phenylethan-1-one) with 2-nitrobenzaldehyde in the molten state yielded the expected chalcone, (E)-3-(2-nitrophenyl)-1-phenylprop-2-en-1-one, and, unexpectedly, the title compound, C30H22N2O6, which results ...
Manuel Velasco Ximello +6 more
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Synthetic studies towards d-modified paclitaxel analogues [PDF]
Journal of the Serbian Chemical Society, 2012 A synthetic sequence has been developed for the preparation of 9,10-O-diacetyl-4-desmethylene-4β-(3-butenyl)-4α-hydroxy-5-O-mesyltaxicin I-1,2-carbonate 3, an intermediate in the attempted synthesis of cyclobutane paclitaxel analogue.
Matović Radomir +2 more
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A biorenewable cyclobutane-containing building block synthesized from sorbic acid using photoenergy
iScience, 2022 Summary: A novel cyclobutane-containing diacid building block, CBDA-3, was synthesized from sorbic acid using clean, efficient [2 + 2] photocycloaddition.
Micah Mabin +4 more
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1,3-Bis(4-methylbenzoyl)-2,4-bis(2,4,5-trimethoxyphenyl)cyclobutane
IUCrData, 2017 The title compound, C38H40O8, possess an inversion centre at the centroid of the four-membered ring. The dihedral angle between the methylbenzene and trimethoxybenzene rings is 46.19 (8)°.
K. R. Raghavendra +5 more
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2α-Acetoxy-5α-methoxycaryophyll-8(15)-en-3-one
Acta Crystallographica Section E, 2009 The title compound, C18H28O4, crystallizes with two molecules in the asymmetric unit. Both molecules have similar conformations of nine-membered rings, which are trans-fused with cyclobutane fragments.
Wen Zhang, Hong-Quan Duan
doaj +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2020 Recrystallization of (E)-5-phenyl-1-(pyridin-2-yl)pent-2-en-4-yn-1-one at room temperature from ethylene glycol in daylight afforded [3,4-bis(phenylethynyl)cyclobutane-1,2-diyl)bis(pyridin-2-ylmethanone], C32H22N2O2 (3), while (E)-5-(4-methylphenyl)-1 ...
Ivan E. Ushakov +5 more
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Chemistry – A European Journal, EarlyView.The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve +4 more
wiley +1 more source
IUCrJ, 2019 A three-dimensional hydrogen-bonded network based on a rare mok topology has been constructed using an organic molecule synthesized in the solid state. The molecule is obtained using a supramolecular protecting-group strategy that is applied to a solid ...
Shalisa M. Oburn +6 more
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