51079-92-6Relevant academic research and scientific papers
Nonlinear optical properties of diaromatic stilbene, butadiene and thiophene derivatives
Kukkonen, Esa,Lahtinen, Elmeri,Myllyperki?, Pasi,Haukka, Matti,Konu, Jari
, p. 6640 - 6650 (2021/04/22)
Series of highly polar stilbene (1a-e), diphenylbutadiene (2a-c) and phenylethenylthiophene (3a-c) derivatives were preparedviaHorner-Wadsworth-Emmons method with a view to produce new and efficient materials for second harmonic generation (SHG) in the so
Influence of imidazolium ionic liquids on fluorescence of push-pull diphenylbutadienes
Vasu, Anuji K.,Katla, Jagadish,Malek, Naved I.,Kanvah, Sriram
, p. 55 - 62 (2016/02/05)
A series of donor-acceptor substituted diphenylbutadienes have been synthesized and their fluorescence properties in organic solvents and imidazolium ionic liquid media were investigated. Substituted diphenylbutadienes show remarkable solvatochromic emiss
Cyanuric chloride-dimethylformamide mediated cleavage of cyclopropylcarbinols-synthesis of phenolic antioxidant and construction of a new vinylcyclopropane skeleton
Khan, Sagar,Roy, Sanchita,Roy, Rimi,Ghatak, Avishek,Pramanik, Amit,Bhar, Sanjay
supporting information, p. 5019 - 5024 (2015/01/08)
Differently substituted cyclopropylcarbinols underwent ring cleavage with easily accessible cyanuric chloride-N,N-dimethylformamide adduct to produce homoallylic chlorides or dienes depending on the nature and location of the substituents. A mechanistic explanation of the aforesaid observations has been provided. A promising antioxidant compound was prepared following this protocol and studied against Fenton's reagent. This methodology was utilized to construct hitherto unreported vinylcyclopropane frameworks bearing homoallylic chloride and diene moieties.
One-pot synthesis of 1,4-diarylnaphthalenes via a Wittig-Horner reaction/[4+2] cycloaddition/dehydrogenation sequence
Chen, Zhengbo,Shou, Wangge,Wang, Yanguang
experimental part, p. 1075 - 1080 (2009/12/03)
A one-pot synthesis of 1,4-diarylnaphthalenes from cinnamaldehydes, dimethyl benzylphosphonates, and benzenediazonium-2-carboxylate is described. The tandem process involves the Wittig-Horner reaction of the cinnamaldehyde with the benzylphosphonate, [4+2
Correspondence between Molecular Functionality and Crystal Structures. Supramolecular Chemistry of a Family of Homologated Aminophenols
Vangala, Venu R.,Bhogala, Balakrishna R.,Dey, Archan,Desiraju, Gautam R.,Broder, Charlotte K.,Smith, Philip S.,Mondal, Raju,Howard, Judith A. K.,Wilson, Chick C.
, p. 14495 - 14509 (2007/10/03)
The crystal structures and packing features of a family of 13 aminophenols, or supraminols, are analyzed and correlated. These compounds are divided into three groups: (a) compounds 1-5 with methylene spacers of the general type HO-C6H4-(CH2)n- C6H 4-NH2 (n = 1 to 5) and both OH and NH2 in a para position; (b) compounds la, 2a, 2b, 2c, and 3a in which one or more of the methylene linkers in 1 to 3 are exchanged with an S-atom; and (c) compounds 2d, 1b, and 6a prepared with considerations of crystal engineering and where the crystal structures may be anticipated on the basis of structures 1-5, 1a, 2a, 2b, 2c, and 3a. These 13 aminols can be described in terms of three major supramolecular synthons based on hydrogen bonding between OH and NH2 groups: the tetrameric loop or square motif, the infinite N(H)O chain, and β-As sheet. These three synthons are not completely independent of each other but interrelate, with the structures tending toward the more stable β-As sheet in some cases. Compounds 1-5 show an alternation in melting points, and compounds with n = even exhibit systematically higher melting points compared to those with n = odd. The alternating melting points are reflected in, and explained by, the alternation in the crystal structures. The n = odd structures tend toward the β-As sheet as n increases and can be considered as a variable series whereas for n = even, the β-As sheet is invariably formed constituting a fixed series. Substitution of a methylene group by an isosteric S-atom may causes a change in the crystal structure. These observations are rationalized in terms of geometrical and chemical effects of the functional groups. This study shows that even for compounds with complex crystal structures the packing may be reasonably anticipated provided a sufficient number of examples are available.
