Xi:Irritant;
105-56-6Relevant academic research and scientific papers
Synthesis of novel semi-squaraine derivatives and application in efficient dye-sensitized solar cells
Kabanakis, Antonios N.,Bidikoudi, Maria,Elsenety, Mohamed M.,Vougioukalakis, Georgios C.,Falaras, Polycarpos
, p. 308 - 318 (2019)
A series of novel semi-squaraine sensitizers with various architectures and anchors have been synthesized and utilized in dye-sensitized solar cells. These dyes combine indole- or carboline-based electron rich units with strongly electron-withdrawing cyanoacetate moieties or other functional anchoring moieties. They were thoroughly characterized as per their structural, optical and electrochemical properties and the behavior of the as-prepared solar cells were examined in detail using linear sweep voltammetry, electrochemical impedance spectroscopy and DFT calculations. Amongst the herein reported dyes, AKSq1, incorporating a free hydroxyl group directly attached to the squarate ring, exerts the optimum performance in dye-sensitized solar cells, despite the fact that this dye presents the lowest extinction coefficient among the molecules under study. AKSq1 demonstrates power conversion efficiency of 2.63%, about 14% higher than the efficiency obtained with the corresponding reference dye, the commercially available, high-performance, metal-free dye D35, under the same cell fabrication and measuring conditions. This result is attributed to the presence of free squaryl hydroxyl moiety ensuring efficient dye chemisorption and the existence of a lipophilic dodecyl group preventing the aggregation of the squaraine sensitizer onto the semiconductor's surface either by itself, or via increased intercalation of the C12 chain with the chenodeoxycholic acid coadsorbent.
Preparation of new nitrogen-bridged heterocycles. XXXIII. A new preparative method for thieno[3,2-α]indolizines
Kakehi,Ito,Ueda,Takano
, p. 1753 - 1756 (1993)
The treatment of 2-iminothieno[3,2-α]indolizine derivatives with potassium tert-butoxide generated exclusively potassium 1-(2- cyanovinyl)indolizine-2-thiolates through the ring opening of the initially formed thiin-2-imide ions. These 2-indolizinethiolates reacted with various alkylating agents to give the corresponding S-alkylated 1-vinylindolizine derivatives, and 2-acetonylthio- and 2-phenacylthio-1-(2- cyanovinyl)indolizines of these products smoothly underwent intramolecular Michael addition under the conditions employed here to afford the corresponding 2-acetyl- and 2-aroylthieno[3,2-α]indolizines in high yields with the elimination of a methylene compound.
NITROAZINES 25. SPECTRAL STUDY OF THE REACTION OF THE TRANSFORMATION OF 6-NITROAZOLOPYRIMIDINES BY CH-ACTIVE NITRILES
Rusinov, V. L.,Pilicheva, T. L.,Tumashov, A. A.,Egorova, L. G.,Chupakhin, O. N.
, p. 213 - 217 (1994)
The methods of 1H and 13C NMR and UV spectroscopy were utilized to investigate the structure of products of the transformation of 6-nitroazolopyrimidines by CH-active nitriles.The mechanism of reactions is discussed.
Radical trifunctionalization of hexenenitrile via remote cyano migration
Chang, Chenyang,Wu, Xinxin,Zhang, Huihui,Zhu, Chen
supporting information, p. 1005 - 1008 (2022/02/01)
A novel radical-mediated trifunctionalization of hexenenitriles via the strategy of remote functional group migration is disclosed. A portfolio of functionalized hexenenitriles are employed as substrates. After difunctionalization of the unactivated alken
PROCESS FOR PREPARING CYANOACETATES
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Paragraph 0041; 0044-0045, (2021/06/22)
This invention relates to a process for producing cyanoacetates involving contacting a salt of an alkyl, alkenyl, alkynyl or aryl formyl acetate with a hydroxyl amine acid under appropriate conditions and for a time sufficient to yield a cyanoacetate.
PROCESS FOR PREPARING CYANOACETATES
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Paragraph 0049-0050, (2020/10/28)
This invention relates to a process for producing cyanoacetates using aspartic acid as a precursor.
PROCESS FOR PREPARING CYANOACETATES
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Paragraph 0027-0030, (2020/10/27)
This invention relates to a process for producing cyanoacetates using a cyanoacetamide as a precursor.
PROCESS FOR PREPARING CYANOACETATES
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Paragraph 0037-0037, (2020/10/28)
This invention relates to a process for producing cyanoacetates using asparagine as a precursor to cyanoacetamide, a staring material to form the cyanoacetates.
Ethyl cyanoacetate synthetic technology
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Paragraph 0013-0018, (2019/02/17)
The invention belongs to the technical field of the organic synthesis, and provides an ethyl cyanoacetate synthetic technology. The technology is capable of, through slowly feeding sulfur trioxide inan esterification reaction process, enabling the sulfur trioxide to react with water generated by esterification, generating sulfuric acid, on the one hand, catalyzing a reaction to be rightwards performed as a catalyst, on the other hand, consuming water in a product so as to prevent a side reaction, thereby improving a product yield and reducing generation of the side reaction at the same time;and absorbing sulfur trioxide from a tail gas by using a second-level absorbing tower, and producing concentrated sulfuric acid by using a first-level tower, thereby realizing recovery of the catalyst, by-producing sodium sulfate by using a second-level tower, and realizing value improvement of the tail gas.
Direct Pd(II)-Catalyzed Site-Selective C5-Arylation of 2-Pyridone Using Aryl Iodides
Maity, Saurabh,Das, Debapratim,Sarkar, Souradip,Samanta, Rajarshi
supporting information, p. 5167 - 5171 (2018/09/13)
A straightforward Pd(II)-catalyzed general strategy was developed for the C5-selective arylation of the 2-pyridone core with easily available aryl iodides. The transformation was highly regioselective and accomplished with a wide scope and functional group tolerance. Silver nitrate played a crucial role in this direct site-selective arylation. The method was extended to synthesize biologically active molecules.
