Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

Filters

My NCBI Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1945 1
1946 10
1947 5
1948 9
1949 22
1950 10
1951 5
1952 12
1953 6
1954 7
1955 9
1956 11
1957 8
1958 4
1959 8
1960 19
1961 10
1962 13
1963 15
1964 25
1965 12
1966 10
1967 16
1968 18
1969 21
1970 29
1971 26
1972 39
1973 39
1974 32
1975 54
1976 72
1977 43
1978 51
1979 55
1980 58
1981 65
1982 63
1983 71
1984 96
1985 80
1986 74
1987 92
1988 89
1989 101
1990 112
1991 157
1992 192
1993 177
1994 194
1995 213
1996 262
1997 253
1998 242
1999 272
2000 370
2001 458
2002 530
2003 570
2004 633
2005 678
2006 695
2007 770
2008 798
2009 873
2010 946
2011 1004
2012 1035
2013 1093
2014 1056
2015 1060
2016 923
2017 913
2018 858
2019 958
2020 1013
2021 982
2022 1042
2023 916
2024 508

Text availability

Article attribute

Article type

Publication date

Search Results

22,174 results

Results by year

Filters applied: . Clear all
Page 1
Carbonyl-Olefin Metathesis.
Albright H, Davis AJ, Gomez-Lopez JL, Vonesh HL, Quach PK, Lambert TH, Schindler CS. Albright H, et al. Chem Rev. 2021 Aug 11;121(15):9359-9406. doi: 10.1021/acs.chemrev.0c01096. Epub 2021 Jun 16. Chem Rev. 2021. PMID: 34133136 Free PMC article. Review.
This Review describes the development of strategies for carbonyl-olefin metathesis reactions relying on stepwise, stoichiometric, or catalytic approaches. ...The Review concludes with an overview of applications of these currently available methods for carbonyl-olefin …
This Review describes the development of strategies for carbonyl-olefin metathesis reactions relying on stepwise, stoichiometric, or …
Iron-Catalyzed Olefin Metathesis: Recent Theoretical and Experimental Advances.
Grau BW, Neuhauser A, Aghazada S, Meyer K, Tsogoeva SB. Grau BW, et al. Chemistry. 2022 Nov 7;28(62):e202201414. doi: 10.1002/chem.202201414. Epub 2022 Sep 8. Chemistry. 2022. PMID: 35770829 Free PMC article. Review.
Alkane, alkene and alkyne metathesis have become an important tool in synthetic chemistry and have provided access to complex organic structures. Since the discovery of industrial olefin metathesis in the 1960s, many modifications have been reported; thus, increasin …
Alkane, alkene and alkyne metathesis have become an important tool in synthetic chemistry and have provided access to complex organic …
Unraveling the Complex Olefin Isomer Mixture Using Two-Dimensional Gas Chromatography-Photoionization-Time of Flight Mass Spectrometry.
Zou Y, Stefanuto PH, Maimone M, Janssen M, Focant JF. Zou Y, et al. J Chromatogr A. 2021 May 24;1645:462103. doi: 10.1016/j.chroma.2021.462103. Epub 2021 Mar 26. J Chromatogr A. 2021. PMID: 33848660
Commercial dodecenes are a complex chemical mixture with a majority of C(12) olefins and minority of C(8-18) olefins. Structurally, dodecene products may consist of straight-chain alkenes, branched alkenes, as well as cyclic hydrocarbons. Due to …
Commercial dodecenes are a complex chemical mixture with a majority of C(12) olefins and minority of C(8-18) olefins. S …
Photocatalytic Reductive Olefin Hydrodifluoroalkylation Enabled by Tertiary Amine Reductants Compatible with Complex Systems.
Ellefsen JD, Miller SJ. Ellefsen JD, et al. J Org Chem. 2022 Aug 5;87(15):10250-10255. doi: 10.1021/acs.joc.2c01231. Epub 2022 Jul 13. J Org Chem. 2022. PMID: 35829693 Free PMC article.
Mechanistically motivated experiments provide some insight into the reaction mechanism, which supports a terminal step involving proton transfer for electron-poor olefins, while H atom transfer assisted by a thiol cocatalyst may complete the catalytic cycle for electron-ri …
Mechanistically motivated experiments provide some insight into the reaction mechanism, which supports a terminal step involving proton tran …
Tungstacyclopentane Ring Contraction Yields Olefin Metathesis Catalysts.
Boudjelel M, Riedel R, Schrock RR, Conley MP, Berges AJ, Carta V. Boudjelel M, et al. J Am Chem Soc. 2022 Jun 22;144(24):10929-10942. doi: 10.1021/jacs.2c03732. Epub 2022 Jun 8. J Am Chem Soc. 2022. PMID: 35675389
Exposure of a solution of the square pyramidal tungstacyclopentane complex W(NAr)(OSiPh(3))(2)(C(4)H(8)) (Ar = 2,6-i-Pr(2)C(6)H(3)) to ethylene at 22 C in ambient (fluorescent) light slowly leads to the formation of propylene and the square pyramidal tungstacyclobutane …
Exposure of a solution of the square pyramidal tungstacyclopentane complex W(NAr)(OSiPh(3))(2)(C(4)H(8)) (Ar = 2,6-i-Pr(2)C(6)H(3)) t …
The oxidation of cyclo-olefin by the S = 2 ground-state complex [Fe(IV)(O)(TQA)(NCMe)](2).
Li Z, Wang Y, Li W, Li Q, Li F, Gao Z, Fei X, Tian J, Dong L. Li Z, et al. J Biol Inorg Chem. 2020 May;25(3):371-382. doi: 10.1007/s00775-020-01768-1. Epub 2020 Mar 4. J Biol Inorg Chem. 2020. PMID: 32133579
Density functional theory calculation is used to investigate the oxidation of cyclo-olefin (cyclobutene, cyclopentene, cyclohexene, cycloheptene, and cyclo-octene) by the complex [Fe(IV)(O)(TQA)(NCMe)](2+), which has S = 2 ground state, and the effect of electronic …
Density functional theory calculation is used to investigate the oxidation of cyclo-olefin (cyclobutene, cyclopentene, cyclohexene, c …
Lewis acid improved dioxygen activation by a non-heme iron(II) complex towards tryptophan 2,3-dioxygenase activity for olefin oxygenation.
Liao G, Mei F, Chen Z, Yin G. Liao G, et al. Dalton Trans. 2022 Dec 6;51(47):18024-18032. doi: 10.1039/d2dt02769k. Dalton Trans. 2022. PMID: 36373374
Inspired by the significant roles of the hydrogen bond network in dioxygen activation and catalysis by redox enzymes, this work presents a Lewis acid improved dioxygen activation by an Fe(II)(BPMEN)(OTf)(2) complex towards tryptophan 2,3-dioxygenase (TDO) activity for 3-me …
Inspired by the significant roles of the hydrogen bond network in dioxygen activation and catalysis by redox enzymes, this work presents a L …
Visible-Light-Controlled Ruthenium-Catalyzed Olefin Metathesis.
Theunissen C, Ashley MA, Rovis T. Theunissen C, et al. J Am Chem Soc. 2019 May 1;141(17):6791-6796. doi: 10.1021/jacs.8b13663. Epub 2019 Apr 22. J Am Chem Soc. 2019. PMID: 31010292 Free PMC article.
Olefin metathesis is now one of the most efficient ways to create new carbon-carbon bonds. ...Here, we report our work on the development of a new system to achieve visible-light-controlled metathesis by merging olefin metathesis and photoredox catalysis. The combin …
Olefin metathesis is now one of the most efficient ways to create new carbon-carbon bonds. ...Here, we report our work on the develop …
The first macrocyclic abnormally coordinating tetra-1,2,3-triazole-5-ylidene iron complex: a promising candidate for olefin epoxidation.
Zámbó GG, Mayr J, Sauer MJ, Schlachta TP, Reich RM, Kühn FE. Zámbó GG, et al. Dalton Trans. 2022 Sep 20;51(36):13591-13595. doi: 10.1039/d2dt02561b. Dalton Trans. 2022. PMID: 36039702
The first macrocyclic and abnormally coordinating, mesoionic N-heterocyclic carbene iron complex has been synthesised and characterised via ESI-MS, EA, SC-XRD, CV, NMR and UV/Vis spectroscopy. (13)C-NMR spectroscopy and CV measurements indicate a strong sigma-donor ability …
The first macrocyclic and abnormally coordinating, mesoionic N-heterocyclic carbene iron complex has been synthesised and characteris …
Ruthenium Olefin Metathesis Catalysts Bearing a Macrocyclic N-Heterocyclic Carbene Ligand: Improved Stability and Activity.
Kośnik W, Lichosyt D, Śnieżek M, Janaszkiewicz A, Woźniak K, Malińska M, Trzaskowski B, Kajetanowicz A, Grela K. Kośnik W, et al. Angew Chem Int Ed Engl. 2022 Jun 13;61(24):e202201472. doi: 10.1002/anie.202201472. Epub 2022 Apr 13. Angew Chem Int Ed Engl. 2022. PMID: 35347824 Free PMC article.
Formation of sterically hindered C-C double bonds via catalytic olefin metathesis is considered a very challenging task for Ru catalysts. ...The installation of this macrocyclic ligand on the ruthenium centre led to the formation of an olefin metathesis catalyst (tr …
Formation of sterically hindered C-C double bonds via catalytic olefin metathesis is considered a very challenging task for Ru cataly …
22,174 results
You have reached the last available page of results. Please see the User Guide for more information.