نتایج جستجو برای: bis 2 formylphenoxy alkyl ether
تعداد نتایج: 2572926 فیلتر نتایج به سال:
TEG 1 Triethylene Glycol (CAS# 112-27-6) (Synonyms: 2,2'-(1,2-Ethanediylbis(oxy))bisethanol; 1,2-Bis(2-hydroxyethoxy)ethane; 2,2'Ethylenedioxybis(ethanol); 2,2'-Ethylenedioxydiethanol; 2,2'-Ethylenedioxyethanol; 3,6Dioxaoctane-1,8-diol; Bis(2-hydroxyethoxyethane); Di-beta-hydroxyethoxyethane; Ethanol, 2,2'(1,2-ethanediylbis(oxy))bis-; Ethanol, 2,2'-(ethylenedioxy)di-; Ethylene glycol dihydroxyd...
In the title compound, C14H12Br2O, the dihedral angle between the aromatic rings is 2.7 (3)° and the Br atoms lie on the same side of the mol-ecule. No inter-molecular inter-actions occur in the crystal beyond van der Waals contacts.
Various analogues of the anti-HIV-1 agent TSAO-T, [1-[2',5'-bis-O-(tert-butyldimethylsilyl)-beta-D-ribofuranosyl]thymine]-3'-spiro-5"-(4"-amino-1",2"-oxathiole-2",2"-dioxide) have been synthesized in which the 5'-TBDMS group has been replaced by alkyl-, alkenyl- or aromatic ether groups, substituted amines, carbamoyl or (thio)acyl groups. The compounds synthesized were evaluated for their inhib...
We have used the high nucleophilicity of bromide ion in the form of the ionic liquid, 1-n-butyl-3-methylimidazolium bromide ([bmim][Br]), for the nucleophilic displacement of an alkyl group to regenerate a phenol from the corresponding aryl alkyl ether. Using 2-methoxynaphthalene (1) as a model compound, we found that the combination of ionic liquid [bmim][Br] and p-toluenesulfonic acid with wa...
In this study, a class of bis-1,2-(4-aryl-2-alkyl-1H- inden-1-yl) ethane was synthesized and characterized by spectroscopic methods such as 1HNMR, 13CNMR, melting point and FTIR. bis-1,2-(4-aryl-2-alkyl-1H- inden-1-yl) ethane was synthesized by the reaction of butyllithium, arylindenes and dibromoethane in a facile, one-pot strategy. It’s shown that these methods have a wide scope to afford li...
New bis (alkyl) selenosalen podand ligands having Se2N2 donor sites have been synthesized by the condensation of unsymmetrical o-formylphenyl alkyl selenide (1-3) with ethylenediamine. The reaction of bis(alkyl)selenosalen podands with Pd(II) and Pt(II) afforded selenoether-selenolate coordination complexes 7-10via cleavage of one of the two Se-C(alkyl) bonds of bis(alkyl)selenosalen podands up...
Procedures for the synthesis and purification of two 14C-labeled alkyl polyoxyethylene detergent preparations are described. One of the preparations consisted mainly of [14C]dodecyloctaoxyethylene ether, the other consisted mainly of [14C] octylhexaoxyethylene ether, with critical micellar concentrations of approximately 50 microM and 10 mM, respectively. Condensation of alkyl bromides with fra...
Chem. Abstr. Services Reg. No.: 1675-54-3 Chem. Abstr. Name: 2,2' -r (I-Methylethylidene )bis( 4, I-phenyleneoxyethylene) )bis(oxiane) . IUPAC Systematic Name: 2,2'-r(1-Methylethylidene)bis(4,i-phenyleneoxyethylene) )bis( oxiane ) Synonym: 4,4' -Bis(2,3-epoxyropoxy)diphenyldimethylmethane; 2,2-bisfpara-(2,3epoxyropoxy)phenyl)propane; 2,2-bisr 4-(2,3-epoxyropoxy)phenyl)propane; bis( 4glycidyloxy...
This study concerns the structural change of lignin during auto-catalyzed ethanol-water pulping of aspen by 1H-NMR. The results showed that the linkages of alkyl-aryl ether of lignin, such as the α-ether linkages (α-O-4) and the β-ether linkages (β-O-4), were broken and the alkyl part formed carbenium at the Cα and Cβ of the aliphatic branch. Meanwhile, the aryl part of ether accepted one H and...
Despite the availability of a large number of alkyl tetrahydrofurfuryl ethers that have a wide range of applications, pure bis(tetrahydrofurfuryl) ether (BTHFE) has not been previously synthesized. Here, we report the synthesis of BTHFE (consisting of the RR, SS, and meso stereoisomers) at greater than 99 % purity from tetrahydrofurfuryl alcohol, using (tetrahydrofuran-2-yl)methyl methanesulfon...
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