Results 11 to 20 of about 224,439 (406)

Few layer 2D pnictogens catalyze the alkylation of soft nucleophiles with esters [PDF]

Nat. Commun. 2019, 10, 509, 2019
Group 15 elements in zero oxidation state (P, As, Sb and Bi), also called pnictogens, are rarely used in catalysis due to the difficulties associated in preparing well-structured and stable materials. Here, we report on the synthesis of highly exfoliated, few layer 2D phosphorene and antimonene in zero oxidation state, suspended in an ionic liquid ...
Vicent Lloret, Miguel A Rivero-Crespo, J. A. Vidal-Moya, S. Wild, A. Doménech‐Carbó, Bettina S. J. Heller, Sunghwan Shin, H. Steinrück, F. Maier, F. Hauke, M. Varela, A. Hirsch, A. Leyva–Pérez, Gonzalo Abellán   +13 more
arxiv   +3 more sources

Catalytic Enantioselective Sulfur Alkylation of Sulfenamides for the Asymmetric Synthesis of Sulfoximines.

Journal of the American Chemical Society, 2022
Sulfoximines are increasingly incorporated in agrochemicals and pharmaceuticals, with the two enantiomers of chiral sulfoximines often having profoundly different binding interactions with biomolecules.
Nathaniel S. Greenwood, Andrew T Champlin, J. Ellman   +2 more
semanticscholar   +1 more source

Regioselective Reactions of Highly Substituted Arynes [PDF]

, 2010
The fully regioselective reactivity of four new highly substituted silyl aryl triflate aryne precursors in aryne acyl-alkylation, acyl-alkylation/condensation, and heteroannulation reactions is reported.
Bugga, Pradeep, Gilmore, Christopher D., Stoltz, Brian M., Tadross, Pamela M., Virgil, Scott C.   +4 more
core   +2 more sources

Synthesis and regioselective N- and O-alkylation of 3-alkyl-5-phenyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7(6H)-ones and 2-phenyl-9-propyl-9H-purin-6(1H)-one with evaluation of antiviral and antitumor activities [PDF]

, 2008
3-Alkyl-5-phenyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7(6H)-ones were prepared by nitrosative cyclization of the appropriate 5,6-diamino-2-phenylpyrimidin-4(3H)-ones with nitrous acid and were subjected to regioselective alkylation with several alkylating ...
Ali, Baker, Bohle, Bowden, Bram, Carvalho, Clarke, Daly, De Simone, Huber, Islam, Kidder, Koppel, Machida, Machida, Miura, Montgomery, Mosmann, Nagamatsu, Nagamatsu, Nagamatsu, Nagamatsu, Nagamatsu, Nagamatsu, Noell, Noriyuki Ashida, Nübel, Ovcharova, Rafiqul Islam, Skipper, Smith, Sugiyama, Thomson, Tomohisa Nagamatsu, Yoneda   +34 more
core   +1 more source

Steam-Induced Coarsening of Single-Unit-Cell MFI Zeolite Nanosheets and Its Effect on External Surface Brønsted Acid Catalysis. [PDF]

, 2020
Commonly used methods to assess crystallinity, micro-/mesoporosity, Brønsted acid site density and distribution (in micro- vs. mesopores), and catalytic activity suggest nearly invariant structure and function for aluminosilicate zeolite MFI two ...
Abdelrahman, Omar A, Alhassan, Saeed, Dauenhauer, Paul J, Guefrachi, Yasmine, Kumar, Gaurav, Li, Xinyu, Navrotsky, Alexandra, Sharma, Geetu, Tsapatsis, Michael, Vinter, Katherine P, Xu, Dandan, Zhang, Wei   +11 more
core   +2 more sources

ChemInform Abstract: Alkyl—Alkyl Suzuki Cross‐Coupling of Unactivated Secondary Alkyl Chlorides. [PDF]

ChemInform, 2010
AbstractThe first alkyl—alkyl Suzuki reaction of unactivated secondary chlorides is applicable to both cyclic and acyclic secondary alkyl halides tolerating a variety of functional groups.
Lu, Zhe, Fu, Gregory C.
openaire   +8 more sources

TDP1 deficiency sensitizes human cells to base damage via distinct topoisomerase I and PARP mechanisms with potential applications for cancer therapy [PDF]

, 2013
Base damage and topoisomerase I (Top1)-linked DNA breaks are abundant forms of endogenous DNA breakage, contributing to hereditary ataxia and underlying the cytotoxicity of a wide range of anti-cancer agents.
Alagoz, Boyd, Breslin, Caldecott, Chen, Chiang, Ciccia, Dalhus, Das, Demple, Dungey, El-Khamisy, Fu, Godon, Hecht, Hegde, Hudson, Interthal, Interthal, Kato, Katyal, Kummar, Lebedeva, Lindahl, Lindahl, Liu, Loeb, Luo, Madhusudan, Meisenberg, Meryem Alagoz, Mohammed, Morland, Murai, Murai, Nilsen, Owen S. Wells, Pommier, Pourquier, Povirk, Ray Chaudhuri, Rydberg, Sherif F. El-Khamisy, Strom, Sultana, Takashima, Wilson, Xanthoudakis, Yang, Zeng, Zhou   +50 more
core   +1 more source

ALKYLATION OF BENZENE WITH LONG CHAIN OLEFINS OVER SOLID-ACID CATALYST

Journal of Engineering, 2009
This investigation is concerned with the linear alkylbenzene production reaction by the alkylation of benzene with long chain olefins C10-C13 over various prepared solid acid catalysts.
Abdul Halim A. K. Mohammed, Ali M. Ridha   +1 more
doaj   +1 more source

Effect of Alkyl-group Flexibility on the Melting Point of Imidazolium-based Ionic Liquids [PDF]

J. Chem. Phys. 153, 044504 (2020), 2021
The low melting point of room temperature ionic liquids is usually explained in terms of the presence of bulky, low symmetry and flexible ions, with the first two factors related to the lattice energy while an entropic effect is attributed to the latter.
arxiv   +1 more source

DNA polymerase α (swi7) and the flap endonuclease fen1 (rad2) act together in the s-phase alkylation damage response in S. pombe [PDF]

, 2012
Polymerase α is an essential enzyme mainly mediating Okazaki fragment synthesis during lagging strand replication. A specific point mutation in Schizosaccharomyces pombe polymerase α named swi7-1, abolishes imprinting required for mating-type switching ...
Jacob Z. Dalgaard, Martin G. Marinus, Milana Koulintchenko, Prakash Arumugam, Sonya Vengrova, Trevor Eydmann   +5 more
core   +2 more sources