214360-67-5Relevant articles and documents
Columnar propeller-like 1,3,5-triphenylbenzenes: The missing link of shape-persistent hekates
W?hrle, Tobias,Beardsworth, Stuart James,Schilling, Christopher,Baro, Angelika,Giesselmann, Frank,Laschat, Sabine
, p. 3730 - 3736 (2016)
Triphenylbenzenes with different substitution patterns at the outer phenyl rings have been successfully synthesised. Sixfold n-alkoxy substitution was insufficient for mesomorphism, but already increasing the number of side chains by three methoxy groups
Carbon-carbon bond activation by B(OMe)3/B2pin2-mediated fragmentation borylation
Chen, Quan,Jiang, Jiachen,Wang, Li,Wu, Aizhen,Yin, Youzhi,Zhang, Hua,Zhang, Ke,Zhao, Mengzhen,Zhong, Qi,Zou, Youliang
, p. 15104 - 15109 (2021/12/09)
Selective carbon-carbon bond activation is important in chemical industry and fundamental organic synthesis, but remains challenging. In this study, non-polar unstrained Csp2-Csp3 and Csp2-Csp2 bond activation was achieved by B(OMe)3/B2pin2-mediated fragmentation borylation. Various indole derivatives underwent C2-regioselective C-C bond activation to afford two C-B bonds under transition-metal-free conditions. Preliminary mechanistic investigations suggested that C-B bond formation and C-C bond cleavage probably occurred in a concerted process. This new reaction mode will stimulate the development of reactions based on inert C-C bond activation. This journal is
Understanding the Activation of Air-Stable Ir(COD)(Phen)Cl Precatalyst for C-H Borylation of Aromatics and Heteroaromatics
Slack, Eric D.,Colacot, Thomas J.
supporting information, p. 1561 - 1565 (2021/02/20)
A newly developed robust catalyst [Ir(COD)(Phen)Cl] (A) was used for the C-H borylation of three dozen aromatics and heteroaromatics with excellent yield and selectivity. Activation of the catalyst was identified by the use of catalytic amounts of water, alcohols, etc., when B2pin2 was used in noncoordinating solvents, while for THF catalytic use of HBpin was required. The results were on par with the in situ based expensive system [Ir(OMe)(COD)]2/dtbbpy or Me4Phen.
Highly Selective and Divergent Acyl and Aryl Cross-Couplings of Amides via Ir-Catalyzed C-H Borylation/N-C(O) Activation
Gao, Pengcheng,Szostak, Michal
supporting information, p. 6010 - 6015 (2020/07/30)
Herein, we demonstrate that amides can be readily coupled with nonactivated arenes via sequential Ir-catalyzed C-H borylation/N-C(O) activation. This methodology provides facile access to biaryl ketones and biaryls by the sterically controlled Ir-catalyzed C-H borylation and divergent acyl and decarbonylative amide N-C(O) and C-C activation. The methodology diverts the traditional acylation and arylation regioselectivity, allowing us to directly utilize readily available arenes and amides to produce valuable ketone and biaryl motifs.
NNB-type tridentate boryl ligands enabling a highly active iridium catalyst for C–H borylation
Ding, Siyi,Wang, Linghua,Miao, Zongcheng,Li, Pengfei
, (2019/04/30)
Boryl ligands play a very important role in catalysis because of their very high electron-donating property. In this paper, NNB-type boryl anions were designed as tridentate ligands to promote aryl C–H borylation. In combination with [IrCl(COD)]2/su
Synthesis and biological evaluation of cis-restrained carbocyclic combretastatin A-4 analogs: Influence of the ring size and saturation on cytotoxic properties
Nowikow, Christina,Fuerst, Rita,Kauderer, Maria,Dank, Christian,Schmid, Walther,Hajduch, Marian,Rehulka, Jiri,Gurska, Sona,Mokshyna, Olena,Polishchuk, Pavel,Zupkó, István,Dzubak, Petr,Rinner, Uwe
, (2019/08/12)
Combretastatin A-4 (CA-4) is a highly cytotoxic natural product and several derivatives have been prepared which underwent clinical trial. These investigations revealed that the cis-stilbene moiety of the natural product is prone to undergo cis/trans isomerization under physiological conditions, reducing the overall activity of the drug candidates. Herein, we report the preparation of cis-restrained carbocyclic analogs of CA-4. The compounds, which differ by the size and hybridization of the carbocyclic ring have been evaluated for their cytotoxic properties and their ability to inhibit tubulin polymerization. Biological data, supported by molecular docking studies, identified cyclobutenyl and cyclobutyl derivatives of the natural product as highly promising drug candidates.
Nickel-catalysed decarbonylative borylation of aroyl fluorides
Wang, Zhenhua,Wang, Xiu,Nishihara, Yasushi
supporting information, p. 13969 - 13972 (2019/01/03)
The first Ni(cod)2/PPh3 catalyst system has been established for decarbonylative borylation of aroyl fluorides with bis(pinacolato)diboron. A wide range of functional groups in the substrates were well tolerated. The ease of access of the starting aroyl fluorides indicates that these results might become an alternative to the existing decarbonylation events.
A method for inhibiting PRMT7 compound and its preparation method and application (by machine translation)
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Paragraph 0213-0216, (2018/10/04)
The invention belongs to the field of chemical medicine, and in particular relates to a method for inhibiting PRMT7 compound, its formula is as follows: In some embodiments of the compounds proved that, this compound can to PRMT7 produce better inhibitio
Star adamantane derivative molecular glass and method of producing the same, application
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Paragraph 0048-0050, (2017/02/02)
The invention discloses star-shaped adamantane derivative molecular glasses having the following structure shown in the description, wherein substituents R1-R12 are respectively hydrogen, hydroxy, alkoxy or acid sensitivity substituents; the substituents
A star-shaped four phenyl ethylene derivative molecular glass, positive photoresist, positive tone photoresist coating and its application
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Paragraph 0048-0050, (2017/04/25)
The invention discloses starlike tetraphenylethylene derivative molecular glass, a positive photoresist, a positive photoresist coating and application thereof. The starlike tetraphenylethylene derivative molecular glass has the molecular structure shown