364064-68-6Relevant academic research and scientific papers
Facile synthesis of C2-symmetric chiral binaphthyl ketone catalysts
Seki, Masahiko,Furutani, Toshiyuki,Hatsuda, Masanori,Imashiro, Ritsuo
, p. 2149 - 2152 (2000)
C2-Symmetric chiral binaphthyl ketones, efficient catalysts for asymmetric epoxidation, have been synthesized through an intramolecular Ullmann reaction and/or a lipase-catalyzed enantioselective hydrolysis of the 11-membered cyclic binaphthyl acetate. (C) 2000 Elsevier Science Ltd.
Photoactuators based on the dynamic molecular crystals of naphthalene acrylic acids driven by stereospecific [2+2] cycloaddition reactions
Liu, Jiaxi,Ye, Kaiqi,Shen, Yanbing,Peng, Jiang,Sun, Jingbo,Lu, Ran
, p. 3165 - 3175 (2020/03/19)
The photomechanical effects of the dynamic molecular crystals of halogen-substituted naphthalene acrylic acids (1FNaAA, 1ClNaAA, 1BrNaAA, 1INaAA and 6BrNaAA) have been investigated. Upon UV irradiation, the needle-like crystal of 1FNaAA curls away from the light source, while the slice-like crystal of 6BrNaAA bends towards the light source. Moreover, the light-induced bending, flipping and bursting are observed for the elongated needle-like crystals of 1FNaAA, and the slice-like crystals of 1ClNaAA and 1BrNaAA show bending, cracking, coiling, rotating and twisting triggered by 365 nm light. It is found that stereospecific [2+2] cycloaddition reactions take place in the crystals to afford one stereoisomer of β-type cyclobutanes, since 1FNaAA, 1ClNaAA, 1BrNaAA and 6BrNaAA pack in a head-to-head mode, which satisfies the Schmidt's topo-photochemical criteria. The strain can be generated and accumulated during the photodimerization, and the release of the strain leads to the photomechanical effects. This provides new clues for the development of photomechanical molecular crystals based on acrylic acids bearing halogen-substituted aromatic units.
Complexes of ruthenum, method for their preparation, and their application in olefin metathesis reactions
-
Page/Page column 13, (2015/07/15)
The present invention provides new ruthenium complexes of Formula (1), which contain a chelate ring created by a halogen atom X. The invention concerns also a method for the preparation of the new ruthenium complexes and their application in metathesis re
Formation of one-dimensional helical columns and excimerlike excited states by racemic quinoxaline-fused [7]carbohelicenes in the crystal
Sakai, Hayato,Shinto, Sho,Araki, Yasuyuki,Wada, Takehiko,Sakanoue, Tomo,Takenobu, Taishi,Hasobe, Taku
, p. 10099 - 10109 (2014/08/18)
A series of quinoxaline-fused [7]carbohelicenes (HeQu derivatives) was designed and synthesized to evaluate their structural and photophysical properties in the crystal state. The quinoxaline units were expected to enhance the light-emitting properties an
Electronically connected [n]helicenes: Synthesis and chiroptical properties of enantiomerically pure (E)-1,2-di([6]helicen-2-yl)ethenes
Roose, Jesse,Achermann, Stefan,Dumele, Oliver,Diederich, Francois
supporting information, p. 3223 - 3231 (2013/07/05)
We synthesized stilbenoid (E)-(P,P)- and (E)-(M,M)-[6]helicene dimers in enantiomerically pure form as part of a program aimed at the exploration of new strategies for the synthesis of large helicenes. The [2+2+2] cyclotrimerization of suitable triynes, r
Palladium-catalyzed annulation of arynes by 2-halobenzaldehydes: Synthesis of fluoren-9-ones
Zhang, Xiaoxia,Larock, Richard C.
, p. 3973 - 3976 (2007/10/03)
(Chemical Equation Presented) Arynes, generated in situ from 2-(trimethylsilyl)aryl triflates and CsF, undergo annulation by o-haloarenecarboxaldehydes in the presence of a Pd catalyst, providing a useful new method for the synthesis of fluoren-9-ones in good yields.
Unexpected isolation, and structural characterization, of a β-hydrogen-containing σ-alkylpalladium halide complex in the course of anintramolecular Heck reaction. Synthesis of polycyclic isoquinoline derivatives
Clique, Blandine,Fabritius, Charles-Henry,Couturier, Cedric,Monteiro, Nuno,Balme, Genevieve
, p. 272 - 273 (2007/10/03)
The isolation of a stable β-hydrogen-containing R-PdLn-X complex (R = alkyl; X = halide) issued from a Heck reaction is reported together with some aspects of its reactivity.
