16078-91-4Relevant academic research and scientific papers
Photo-crosslinkable second order nonlinear AB2-type monomers: Convenient synthesis and enhanced NLO thermostability
Cheng, Ziyao,Deng, Xiaocong,Li, Qianqian,Li, Zhen,Wang, Ruifang,Zhao, Wenjing
supporting information, p. 6380 - 6387 (2020/06/09)
In this article, two AB2-type second-order nonlinear optical monomers (DN-SH and DS-SH) containing two double bonds and one thiol group, respectively, were synthesized successfully. These two monomers could be in situ photo-crosslinked via a th
Catalyst-Free [2,3]-Sigmatropic Rearrangement Reactions of Photochemically Generated Ammonium Ylides
He, Feifei,Koenigs, Rene M.,Li, Fang
, p. 4348 - 4358 (2019/11/21)
The rearrangement reaction of ammonium ylides furnishes valuable α,α-disubstituted amino esters. In this work, we describe the visible-light photolysis reaction of aryldiazoacetates in the presence of tertiary amines that react via a free ammonium ylide i
Electrophilic Amination with Nitroarenes
Rauser, Marian,Ascheberg, Christoph,Niggemann, Meike
supporting information, p. 11570 - 11574 (2017/09/11)
An exceptionally general electrophilic amination, which directly transforms commercially available nitroarenes into alkylated aromatic aminoboranes with zinc organyl compounds was developed. The reaction starts with a two-step partial reduction of the nitro group to a nitrenoid, which is used in situ as the electrophilic amination reagent. To facilitate isolation, the resulting air- and moisture-sensitive aminoboranes were reacted with a range of electrophiles. The method not only represents a direct transformation of nitro compounds into electrophilic amination reagents but also provides an elegant alternative to dehydrocoupling methods for the generation of aminoboranes.
Copper-Catalyzed Dicarbofunctionalization of Unactivated Olefins by Tandem Cyclization/Cross-Coupling
Thapa, Surendra,Basnet, Prakash,Giri, Ramesh
supporting information, p. 5700 - 5703 (2017/05/04)
We present a strategy that difunctionalizes unactivated olefins in 1,2-positions with two carbon-based entities. This method utilizes alkyl/arylzinc reagents derived from olefin-tethered alkyl/aryl halides that undergo radical cyclization to generate C(sp3)-Cu complexes in situ, which are intercepted with aryl and heteroaryl iodides. A variety of (arylmethyl)carbo- and heterocycles (N, O) can be synthesized with this new method.
One-Pot Synthesis of O-Allylhydroxylamines through the Organocatalytic Oxidation of Tertiary Allylic Amines Followed by a [2,3]-Meisenheimer Rearrangement
Theodorou, Alexis,Limnios, Dimitris,Kokotos, Christoforos G.
supporting information, p. 5238 - 5241 (2015/03/30)
A cheap, green, and highly efficient one-pot method for the synthesis of O-protected allylic alcohols is described. By utilizing 2,2,2-trifluoroacetophenone as the organocatalyst and H2O2 as the oxidant, a variety of allylic amine N-
Sequential Oxidative α-Cyanation/Anti-Markovnikov Hydroalkoxylation of Allylamines
Wagner, Alexander,Hampel, Nathalie,Zipse, Hendrik,Ofial, Armin R.
supporting information, p. 4770 - 4773 (2015/10/12)
Iron-catalyzed oxidative α-cyanations at tertiary allylamines in the allylic position are followed by anti-Markovnikov additions of alcohols across the vinylic CC double bonds of the initially generated α-amino nitriles. These consecutive reactions generate 2-amino-4-alkoxybutanenitriles from three reactants (allylamines, trimethylsilyl cyanide, and alcohols) in one reaction vessel at ambient temperature.
Direct palladium-catalyzed selective monoallylation of anilines using allylic alcohols
Yang,Yu,Tsai
, p. 7097 - 7100 (2007/10/03)
N-Allylation of anilines using allylic alcohols directly to give monoallylic anilines selectively in high yields has been realized by employing palladium acetate-triphenylphosphine as the catalyst. Palladium-catalyzed one-pot cyclization of 2-aminophenols with 2-butene-1,4-diol leads to 3,4-dihydro-2-vinyl-2H-1,4-benzoxazines. (C) 2000 Elsevier Science Ltd.
An efficient palladium-catalyzed route to N-allylanilines by the direct use of allyl alcohols
Yang, Shyh-Chyun,Hung, Chung-Wei
, p. 1747 - 1752 (2007/10/03)
The direct activation of C-O bonds in allyl alcohols by palladium complexes has been accelerated by carrying out the reactions in the presence of titanium(IV) isopropoxide and molecular sieves (4A). N-Allylation of anilines to give mono- and diallylanilines directly using allyl alcohols has been realized by employing palladium catalysts.
