Results 11 to 20 of about 253,250 (328)

Efficient and selective N-alkylation of amines with alcohols catalysed by manganese pincer complexes

open access: yesNature Communications, 2016
Hydrogen borrowing is an attractive method for C-N bond formation - avoiding multiple alkylation products and reducing waste - but often is carried out with noble metals.
Saravanakumar Elangovan   +5 more
doaj   +2 more sources

DNA Alkylation Damage by Nitrosamines and Relevant DNA Repair Pathways

open access: yesInternational Journal of Molecular Sciences, 2023
Nitrosamines occur widespread in food, drinking water, cosmetics, as well as tobacco smoke and can arise endogenously. More recently, nitrosamines have been detected as impurities in various drugs.
J. Fahrer, M. Christmann
semanticscholar   +1 more source

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

open access: yesJournal 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   +2 more
semanticscholar   +1 more source

Regioselective Reactions of Highly Substituted Arynes [PDF]

open access: yes, 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   +4 more
core   +2 more sources

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

open access: yes, 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   +5 more
core   +2 more sources

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

open access: yes, 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   +50 more
core   +1 more source

Synthesis and structures of O-anthrylmethyl-substituted hexahomotrioxacalix[3]arenes [PDF]

open access: yes, 2016
O-Alkylation of 7,15,23-tri-tert-butyl-25,26,27-trihydroxy-2,3,10,11,18,19-hexahomo-3,11,19-trioxacalix[3]arene (1H₃) with 9-chloromethylanthracene 5 was carried out under different reaction conditions.
Ikejiri, Yusuke   +5 more
core   +1 more source

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

open access: yesJournal 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   +1 more
doaj   +1 more source

Chemical, Electronic, and Electrical Properties of Alkylated Ge(111) Surfaces [PDF]

open access: yes, 2010
The use of Ge in semiconductor electronics has been constrained by the lack of a simple method of passivating the crystal surface. Toward that end, we have explored the utility of chemically bonded hydrocarbon monolayers.
Brunschwig, Bruce S.   +2 more
core   +2 more sources

Tunable, Functional Diblock Copolypeptide Hydrogels Based on Methionine Homologs. [PDF]

open access: yes, 2020
The preparation of new diblock copolypeptide hydrogels derived from homologs of l-methionine, that is, l-homomethionine and l-6-(methylthio)-l-norleucine is described.
Deming, Timothy J   +2 more
core   +1 more source

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