129-73-7Relevant academic research and scientific papers
Solvent-free synthesis of 4,4-diaminotriarylmethanes-leuco malachite materials in the presence of FePO4
Behbahani, Farahnaz K.,Khademloo, Elham
, p. 1507 - 1510 (2014)
A fast, efficient and versatile route for the synthesis of 4,4-diaminotriarylmethanes is reported using N,N-dimethyl aniline and aryl aldehydes in presence of FePO4 under solvent-free condition at 100°C.
The novel two step synthesis of CuO/ZnO and CuO/CdO nanocatalysts for enhancement of catalytic activity
Kumaraguru, K.,Sankaran, A.
, (2020)
In the present investigation, Copper oxide (CuO)/Zinc oxide (ZnO) and CuO/cadmium oxide (CdO) nanocomposites (NCs) were fabricated by a simple two-step process involving co-precipitation technique and hydrothermal approach for the first time. The Powder X-ray Diffraction (PXRD) pattern demonstrates the existence of monoclinic, hexagonal and cubic phase structure of CuO/ZnO and CuO/CdO NCs. The absorption spectrum of the material was obtained via UV–Visible Spectroscopy and the band-gap value is calculated using Tauc's relation as 1.7 eV, 2.8 eV and 2.75 eV respectively for pure, CuO/ZnO and CuO/CdO NCs. The FESEM images gave the spherical and stone-like morphologies in the prepared CuO/ZnO and CuO/CdO NCs. At room temperature, CuO/ZnO and CuO/CdO NCs act as superior catalyst for the reduction of Rhodamine B (RhB) and Malachite Green (MG) dyes and degradation efficiency attained to be 77.26%, 73.15% for RhB and 79.82%, 74.69 for MG, respectively.
Metal- And solvent-free synthesis of aniline- And phenol-based triarylmethanes: Via Br?nsted acidic ionic liquid catalyzed Friedel-Crafts reaction
Jaratjaroonphong, Jaray,Saeeng, Rungnapha,Senapak, Warapong,Sirion, Uthaiwan,ponpao, nipaphorn
, p. 22692 - 22709 (2021/07/21)
A beneficial, scalable and efficient methodology for the synthesis of aniline-based triarylmethanes has been established through the double Friedel-Crafts reaction of commercial aldehydes and primary, secondary or tertiary anilines using Br?nsted acidic ionic liquid as a powerful catalyst, namely [bsmim][NTf2]. This protocol was successfully performed under metal- and solvent-free conditions with a broad range of substrates, giving the corresponding aniline-based triarylmethane products in good to excellent yields (up to 99%). In addition, alternative aromatic nucleophiles such as phenols and electron-rich arenes were also studied using this useful approach to achieve a diversity of triarylmethane derivatives in high to excellent yields. This journal is
Silver-catalyzed tandem 5- And 6-endo-cyclizationsviaconcomitant yne-ol-imine activation: selective entry to 2-aryldihydrofuroquinolines
Das, Prasanta,Karmakar, Swastik,Kundu, Sandip
, p. 16112 - 16118 (2021/09/22)
A silver(i) catalyzed domino imination-intramolecular biheterocyclization-aromatization cascade has been developed to construct 2-aryl/-heteroaryl dihydrofuroquinolines in moderate to good yield using an aldehyde and unprotected 4-(2-aminophenyl)but-3-yn-1-ol as precursors. Sequential Ag-(i)-induced 5-endo-digcyclization of the yne-ol part and 6-endo-trigcyclization of a proposed Ag-bound imine, followed by aromatization, furnish the furoquinoline derivatives.
Synthesis of Mannich-type derivatives from amides activated by hydrogen bonding with ZnCl2
Gong, Bozhen,Hu, Zhiyu,Jiang, Guofang,Le, Zhanggao,Xie, Zongbo,Zhu, Zhiqiang
supporting information, p. 9095 - 9099 (2020/11/30)
The amide group has one of the most significant functionalities found in many natural products. Herein, low-nucleophilic amides are used in a Mannich-type reaction to synthesize N-acyl-protected amine derivatives. A highly efficient synthetic method utilizing simple aldehydes, N-substituted anilines, and amides as substrates was established through a one-pot amide pathway activated by hydrogen bonding between the ZnCl2 and amide under solvent-free conditions. This strategy can be broadly applied to medicinal chemistry. More importantly, compared with the previous Lewis acid catalyzed reaction, we proposed a new application of zinc chloride. This journal is
COMPOSITIONS, METHODS, AND TEST KITS FOR DETERMINING AUTHENTICITY
-
Paragraph 0143-0144, (2019/04/30)
The present disclosure provides composition having at least one leuco composition conforming to Formula (I): [in-line-formulae]Ar1Ar2Ar3CH??(I)[/in-line-formulae] wherein Ar2 and Ar3 are independently a carbocyclic aryl or heteroaryl, and Ar1 is selected from the group consisting of: unsubstituted phenyl, electron deficient carbocyclic aryl, and heteroaryl. The present disclosure also provides a method of detecting an authentic composition and test kits for detecting authentic compositions.
LAUNDRY CARE COMPOSITIONS, METHODS, AND TEST KITS FOR DETERMINING AUTHENTICITY
-
Paragraph 0174-0177, (2019/04/29)
The present disclosure provides a laundry care composition having at least one laundry care ingredient and at least one leuco composition conforming to Formula (I): [in-line-formulae]Ar1Ar2Ar3CH??(I)[/in-line-formulae] wherein Ar2 and Ar3 are independently a carbocyclic aryl or heteroaryl, and Ar1 is selected from the group consisting of: unsubstituted phenyl, electron deficient carbocyclic aryl, and heteroaryl. The present disclosure also provides a method of determining an authentic laundry care composition and test kits for detecting authentic laundry care compositions.
Synthesis of symmetric triarylmethane derivatives catalyzed by AIL ionic liquid
Kang, Li Q.,Gao, Han,Cai, Yue Q.
, p. 57 - 62 (2017/12/06)
Abstract: An efficient, eco-friendly ionic liquid was described for the synthesis of symmetric triarylmethane derivatives via Baeyer condensation of N,N-dimethylaniline with different active aromatic aldehyde compounds using amide ionic liquid as a catalyst. The syntheses were achieved for the first time using amide ionic liquid as a catalyst eliminating the need for a volatile organic solvent. The advantages of this ionic liquid are low cost and operational simplicity.
Di- and triarylmethylium ions as probes for the ambident reactivities of carbanions derived from 5-benzylated Meldrum's acid
Chen, Xi,Tan, Yue,Berionni, Guillaume,Ofial, Armin R.,Mayr, Herbert
supporting information, p. 11069 - 11077 (2014/10/15)
The kinetics of the reactions of carbocations with carbanions 1 derived from 5-benzyl-substituted Meldrum's acids 1-H (Meldrum's acid=2,2-dimethyl-1,3- dioxane-4,6-dione) were investigated by UV/Vis spectroscopic methods. Benzhydryl cations Ar2CH+ added exclusively to C-5 of the Meldrum's acid moiety. As the second-order rate constants (kC) of these reactions in DMSO followed the linear free-energy relationship lg k=s N(N+E), the nucleophile-specific reactivity parameters N and s N for the carbanions 1 could be determined. In contrast, trityl cations Ar3C+ reacted differently. While tritylium ions of low electrophilicity (E-2) reacted with 1 through rate-determining β-hydride abstraction, more Lewis acidic tritylium ions initially reacted at the carbonyl oxygen of 1 to form trityl enolates, which subsequently reionized and eventually yielded triarylmethanes and 5-benzylidene Meldrum's acids by hydride transfer.
Solvent-free Br?nsted acid catalysed alkylation of arenes and heteroarenes with benzylic alcohols
Barbero, Margherita,Cadamuro, Silvano,Dughera, Stefano,Rucci, Marta,Spano, Giulia,Venturello, Paolo
, p. 1818 - 1826 (2014/03/21)
A simple and efficient alkylation of aromatic and heteroaromatic compounds via the direct SN1-type nucleophilic substitution of benzylic alcohols in the presence of catalytic amounts of the strong Br?nsted acid o-benzenedisulfonimide under neat conditions is herein reported. A library of di- and triaryl (and heteroaryl) methanes was prepared in good yields and high regioselectivity. The observed reactivity was shown to be in agreement with Mayr's nucleophilicity and electrophilicity scales.
