Results 371 to 380 of about 629,880 (409)

Selective C-N Borylation of Alkyl Amines Promoted by Lewis Base.

Angewandte Chemie, 2018
An efficient method for the metal-free deaminative borylation of alkylamines, using bis(catecholato)diboron as the boron source, to directly synthesize various alkyl potassium trifluoroborate salts is introduced.
Jiefeng Hu, Guoqiang Wang, Shuhua Li, Zhuangzhi Shi   +3 more
semanticscholar   +1 more source

Structure-Antibacterial Activity Relationships of Imidazolium-Type Ionic Liquid Monomers, Poly(ionic liquids) and Poly(ionic liquid) Membranes: Effect of Alkyl Chain Length and Cations.

ACS Applied Materials and Interfaces, 2016
The structure-antibacterial activity relationship between the small molecular compounds and polymers are still elusive. Here, imidazolium-type ionic liquid (IL) monomers and their corresponding poly(ionic liquids) (PILs) and poly(ionic liquid) membranes ...
Zhiqiang Zheng, Qiming Xu, Jiangna Guo, Jing Qin, Hailei Mao, Bin Wang, Feng Yan   +6 more
semanticscholar   +1 more source

Alkylated steroids from tosylhydrazones and alkyl-lithiums

Journal of the Chemical Society C: Organic, 1971
The reaction between 5α-cholestan-3-one tosylhydrazone and alkyl-lithium reagents produces equatorial 3β-alkyl-5α-cholestanes.
Ciria Valencia Ortiz, Josef E. Herz
openaire   +3 more sources

Alkylation of tricarbonylcyclohexadienyliron salts () with lithium alkyls

Tetrahedron Letters, 1980
Abstract The salts 1 (Y=H, OMe, Me) react with RLi(R=Me, n-Bu, i-Pr, t-Bu) in CH2Cl2 at low temperature to give 2 and 3 in excellent yields. Nucleophilic addition at the 1-position of 1 (Y=OMe) has been observed for the first time.
B. M. Ratnayake Bandara, Thong-Chak Khor, Arthur J. Birch   +2 more
openaire   +2 more sources

Nickel-Catalyzed Defluorinative Reductive Cross-Coupling of gem-Difluoroalkenes with Unactivated Secondary and Tertiary Alkyl Halides.

Journal of the American Chemical Society, 2017
Herein, we described a nickel-catalyzed monofluoroalkenylation through defluorinative reductive cross-coupling of gem-difluoroalkenes with alkyl halides. Key to the success of this strategy is the combination of C-F cleavage with alkyl halides activation.
Xi Lu, Yan Wang, Ben Zhang, Jing-Jing Pi, Xiao-Xu Wang, Tian‐Jun Gong, B. Xiao, Yao Fu   +7 more
semanticscholar   +1 more source

Reductive alkyl–alkyl coupling from isolable nickel–alkyl complexes

Nature
The selective cross-coupling of two alkyl electrophiles to construct complex molecules remains a challenge in organic synthesis1,2. Known reactions are optimized for specific electrophiles and are not amenable to interchangeably varying electrophilic substrates that are sourced from common alkyl building blocks, such as amines, carboxylic acids and ...
Samir Al Zubaydi, Shivam Waske, Volkan Akyildiz, Hunter F. Starbuck, Mayukh Majumder, Curtis E. Moore, Dipannita Kalyani, Christo S. Sevov   +7 more
openaire   +3 more sources

Stabilizing the cubic perovskite phase of CsPbI3 nanocrystals by using an alkyl phosphinic acid.

Chemical Communications, 2017
CsPbI3 nanocrystals suffer from a facile cubic perovskite to orthorhombic phase transformation, which deteriorates their appealing optoelectronic properties.
Chujie Wang, A. Chesman, J. Jasieniak
semanticscholar   +1 more source

Diastereoselective radical alkylations of alkyl aryl sulfoxides

Tetrahedron Letters, 1996
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ZAHOUILY M, CARON, Giulia, CARRUPT P. A, KNOUZI N, RENAUD P.   +4 more
openaire   +4 more sources

Terthiophene-based D-A polymer with an asymmetric arrangement of alkyl chains that enables efficient polymer solar cells.

Journal of the American Chemical Society, 2015
We report a series of difluorobenzothiadizole (ffBT) and oligothiophene-based polymers with the oligothiophene unit being quaterthiophene (T4), terthiophene (T3), and bithiophene (T2). We demonstrate that a polymer based on ffBT and T3 with an asymmetric
Huawei Hu, Kui Jiang, Guofang Yang, Jing Liu, Zhengke Li, Haoran Lin, Yuhang Liu, Jingbo Zhao, Jie Zhang, F. Huang, Y. Qu, Wei Ma, H. Yan   +12 more
semanticscholar   +1 more source

S,S-Alkyl S?-alkyl(4-methoxyphenyl)phosphonotrithiolothionates

Bulletin of the Russian Academy of Sciences Division of Chemical Science, 1992
[I / \P--At ~i / Ar-P" + 2RSSR ---~ 2At --P I~ \SR \ s / s (1) (2a~ b) ~3a. b) Ar=4-MeOC~H,: R=Et(a), i-Bu(b), The IR spectra of (3a) and(3b) have bands at (v, cm'l): 3075-3070 w, 3010 w (:C-H, Ar), 1594-1590 s, 1500-1497 s (C'-w-" CAr), 698-696 v.s.br (P--S), 535 s, 515-515-510 m (PS2).
L. A. Al’metkina, A. N. Pudovik, Elvira S. Batyeva, Il'yas S. Nizamov, Vladimir A. Alfonsov   +4 more
openaire   +2 more sources