Safety of 4-Methoxybenzaldehyde. Authors Kukkonen, E; Lahtinen, E; Myllyperkio, P; Haukka, M; Konu, J in ROYAL SOC CHEMISTRY published article about in [Kukkonen, Esa; Lahtinen, Elmeri; Haukka, Matti; Konu, Jari] Univ Jyvaskyla, Dept Chem, POB 35, FI-40014 Jyvaskyla, Finland; [Myllyperkio, Pasi] Univ Jyvaskyla, Nanosci Ctr, POB 35, FI-40014 Jyvaskyla, Finland in 2021, Cited 46. The Name is 4-Methoxybenzaldehyde. Through research, I have a further understanding and discovery of 123-11-5
Series of highly polar stilbene (1a-e), diphenylbutadiene (2a-c) and phenylethenyIthiophene (3a-c) derivatives were prepared via Horner-Wadsworth-Emmons method with a view to produce new and efficient materials for second harmonic generation (SHG) in the solid-state. The single-crystal X-ray structures of compounds 1-3 reveal extensive polymorphism and a peculiar photodimerization of the 2-chloro-3,4-dimethoxy-4′-nitrostilbene derivative 1a to afford two polymorphs of tetra-aryl cyclobutane 4. The stilbene congeners 2-chloro-3,4-dimethoxy-4′-nitrostilbene (1a. non-centro), 5-bromo-2-hydroxy-3-nitro-4′-nitrostilbene (1b) and 4-dimethylamino-4′-nitrostilbene (1e), as well as 4′-fIuoro-4 ”-nitro-1,4-diphenyl-1,3-butadiene (2a) present the ideal, non-centrosymmetric arrangement of the chromophores for nonlinear optical (NLO) activity. Compounds lb and 2a exhibit only relatively Low intensity for second harmonic generation (0.04 and 0.18 times that of urea reference, respectively), while the stilbene polymorph 1a.non-centro shows NLO activity of over 32 times that of urea. In addition, the conjugated diaromatic compounds 1-3 display fluorescence behaviour in CH2Cl2 solutions with the exception of stilbene derivative 1b.
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,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles