Search results for "Ylide"
showing 10 items of 1084 documents
Reactions of the hydrofluoroborate salts of open-chain analogues of Reissert compounds with some α,β-ethylenic esters
1999
The reaction of the hydrofluoroborate salt of an open-chain analogue of a Reissert compound with some α,β-ethylenic esters does not give a [4 + 2] cycloadduct, as previously described in the case of ethyl acrylate. The reaction starts with a 1,3-dipolar cycloaddition of a munchnone imine 5c, d. The [3 + 2] cycloadducts 13 evolve via a rearrangement–condensation sequence to give a substituted 2-pyridone derivative 18 or 19. The proposed mechanism has been verified by the isolation and structural X-ray analysis of some compounds of the reaction sequence.
CCDC 1554869: Experimental Crystal Structure Determination
2019
Related Article: Wenqian Shan, Valentin Quesneau, Nicolas Desbois, Virginie Blondeau-Patissier, Mario L. Naitana, Yoann Rousselin, Claude P. Gros, Zhongping Ou, Karl M. Kadish|2019|J.Porphyrins Phthalocyanines|23|213|doi:10.1142/S1088424619500214
CCDC 285998: Experimental Crystal Structure Determination
2006
Related Article: S.Amriou, Changsheng Wang, A.S.Batsanov, M.R.Bryce, D.F.Perepichka, E.Orti, R.Viruela, J.Vidal-Gancedo, C.Rovira|2006|Chem.-Eur.J.|12|3389|doi:10.1002/chem.200501326
CCDC 956724: Experimental Crystal Structure Determination
2013
Related Article: M. O. Plutenko, R. D. Lampeka, M. Haukka and E. Nordlander|2013|Acta Crystallogr.,Sect.E:Struct.Rep.Online|69|o765|doi:10.1107/S1600536813009628
CCDC 914350: Experimental Crystal Structure Determination
2013
Related Article: M.O.Plutenko, R.D.Lampeka, M.Haukka, E.Nordlander|2012|Acta Crystallogr.,Sect.E:Struct.Rep.Online|68|o3381|doi:10.1107/S1600536812045412
CCDC 1581480: Experimental Crystal Structure Determination
2018
Related Article: Hendrik V. Schröder, Felix Witte, Marius Gaedke, Sebastian Sobottka, Lisa Suntrup, Henrik Hupatz, Arto Valkonen, Beate Paulus, Kari Rissanen, Biprajit Sarkar, Christoph A. Schalley|2018|Org.Biomol.Chem.|16|2741|doi:10.1039/C8OB00415C
A second monoclinic polymorph of 2-(3,5-dimethyl-1H-pyrazol-1-yl)-2-hydroxyimino-N'-[1-(pyridin-2-yl)ethylidene]acetohydrazide
2013
[Introduction] The title compound, C 14 H 16 N 6 O 2 , is a second monoclinic polymorph of 2-[1-(3,5-dimethyl)pyrazolyl]-2-hydroxyimino- N 0 -[1-(2-pyridyl)ethylidene] acetohydrazide, with two crystal- lographically independent molecules per asymmetric unit. The non-planar molecules are chemically equal having similar geometric parameters. The previously reported polymorph [Plutenko et al. (2012). Acta Cryst. E 68 , o3281] was described in space group Cc ( Z = 4). The oxime group and the O atom of the amide group are anti with respect to the C—C bond. In the crystal, molecules are connected by N—H N hydrogen bonds into zigzag chains extending along the b axis. peerReviewed
CCDC 1474771: Experimental Crystal Structure Determination
2016
Related Article: Uğur Kaya, Pankaj Chauhan, Kristina Deckers, Rakesh Puttreddy, Kari Rissanen, Gerhard Raabe, Dieter Enders|2016|Synthesis|48|3207|doi:10.1055/s-0035-1561468
CCDC 2194823: Experimental Crystal Structure Determination
2022
Related Article: Johanna M. Alaranta, Khai-Nghi Truong, María Francisca Matus, Sami A. Malola, Kari T. Rissanen, Sailee S. Shroff, Varpu S. Marjomäki, Hannu J. Häkkinen, Tanja M. Lahtinen|2022|Dyes Pigm.|208|110844|doi:10.1016/j.dyepig.2022.110844
CCDC 2194826: Experimental Crystal Structure Determination
2022
Related Article: Johanna M. Alaranta, Khai-Nghi Truong, María Francisca Matus, Sami A. Malola, Kari T. Rissanen, Sailee S. Shroff, Varpu S. Marjomäki, Hannu J. Häkkinen, Tanja M. Lahtinen|2022|Dyes Pigm.|208|110844|doi:10.1016/j.dyepig.2022.110844