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1903 3
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1911 2
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1916 4
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1923 2
1924 3
1925 1
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2002 203
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2005 250
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2007 254
2008 234
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12,299 results

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Page 1
Tropylium-promoted Ritter reactions.
Doan SH, Hussein MA, Nguyen TV. Doan SH, et al. Chem Commun (Camb). 2021 Sep 6;57(71):8901-8904. doi: 10.1039/d1cc02947a. Chem Commun (Camb). 2021. PMID: 34486600
The Ritter reaction used to be one of the most powerful synthetic tools to functionalize alcohols and nitriles, providing valuable N-alkyl amide products. ...Herein, we report the development of a new method using salts of the tropylium ion to promote the Ritter rea …
The Ritter reaction used to be one of the most powerful synthetic tools to functionalize alcohols and nitriles, providing valuable N- …
Ritter-enabled catalytic asymmetric chloroamidation of olefins.
Steigerwald DC, Soltanzadeh B, Sarkar A, Morgenstern CC, Staples RJ, Borhan B. Steigerwald DC, et al. Chem Sci. 2020 Dec 7;12(5):1834-1842. doi: 10.1039/d0sc05224h. Chem Sci. 2020. PMID: 34163947 Free PMC article.
To circumvent this issue, acetonitrile, possessing a low HalA, was used as the nucleophile in the catalytic asymmetric Ritter-type chloroamidation of allyl-amides. This method is compatible with Z and E alkenes with both alkyl and aromatic substitution. ...We also report t …
To circumvent this issue, acetonitrile, possessing a low HalA, was used as the nucleophile in the catalytic asymmetric Ritter-type ch …
A copper-catalyzed Ritter-type cascade via iminoketene for the synthesis of quinazolin-4(3H)-ones and diazocines.
Abe T, Kida K, Yamada K. Abe T, et al. Chem Commun (Camb). 2017 Apr 21;53(31):4362-4365. doi: 10.1039/c7cc01406f. Epub 2017 Apr 4. Chem Commun (Camb). 2017. PMID: 28374023
We have developed a copper-catalyzed Ritter-type reaction/cyclization cascade of anthranilic acids and nitriles, affording the quinazolin-4(3H)-ones. The cascade proceeds through a Ritter-type reaction capturing the iminoketene intermediates by nitriles. Furthermore …
We have developed a copper-catalyzed Ritter-type reaction/cyclization cascade of anthranilic acids and nitriles, affording the quinaz …
The developments of C-N bond formation via electrochemical Ritter-type reactions.
Ma Y, Liu C, Yang D, Fang Z, Huang W, Cheng R, Ye J. Ma Y, et al. Org Biomol Chem. 2024 Sep 25;22(37):7537-7548. doi: 10.1039/d4ob01210k. Org Biomol Chem. 2024. PMID: 39190317 Review.
With the development of organic electrochemical synthesis, a series of notable achievements have been made in electrochemical Ritter amination reactions, which have enriched the methods available for constructing C-N bonds. ...The application value of Ritter reactio …
With the development of organic electrochemical synthesis, a series of notable achievements have been made in electrochemical Ritter …
Spigelian Hernias: A high volume institutional review.
Ritter EM. Ritter EM. Surg Open Sci. 2023 Jul 22;15:60. doi: 10.1016/j.sopen.2023.07.010. eCollection 2023 Sep. Surg Open Sci. 2023. PMID: 37645599 Free PMC article. No abstract available.
Visible-Light-Induced Four-Component Ritter-Type Reaction: Access to beta-Trifluoromethyl Imides.
Ma R, Ren Y, Deng Z, Wang KH, Wang J, Huang D, Lv X, Hu Y. Ma R, et al. Org Lett. 2023 Jun 9;25(22):4080-4085. doi: 10.1021/acs.orglett.3c01291. Epub 2023 May 26. Org Lett. 2023. PMID: 37234032
A visible-light-induced four-component Ritter-type reaction was developed for the synthesis of beta-trifluoromethyl imides from CF(3)Br, alkenes, carboxylic acids, and nitriles. ...Furthermore, this method has been proven to be suitable for the late-stage diversification o …
A visible-light-induced four-component Ritter-type reaction was developed for the synthesis of beta-trifluoromethyl imides from CF(3) …
"Contribution to the Question of Pneumotyphus": a discussion of the original article by J. Ritter in 1880.
Harris RL, Williams TW Jr. Harris RL, et al. Rev Infect Dis. 1985 Jan-Feb;7(1):119-22. doi: 10.1093/clinids/7.1.116. Rev Infect Dis. 1985. PMID: 3885364
In 1880, Dr. J. Ritter wrote a classic infectious disease article (originally in German) on psittacosis entitled, "Contribution to the Question of Pneumotyphus." ...Ritter's astute observations and their significance are discussed in this paper....
In 1880, Dr. J. Ritter wrote a classic infectious disease article (originally in German) on psittacosis entitled, "Contribution to th …
Synthesis of Arylamides via Ritter-Type Cleavage of Solid-Supported Aryltriazenes.
Wippert NA, Jung N, Bräse S. Wippert NA, et al. ACS Comb Sci. 2019 Aug 12;21(8):568-572. doi: 10.1021/acscombsci.9b00096. Epub 2019 Jul 2. ACS Comb Sci. 2019. PMID: 31264846
A novel route for the synthesis of N-arylamides via the cleavage of aryltriazenes with alkyl or aryl nitriles is presented. We developed a variation of the Ritter reaction that allows the use of acetonitrile as solvent and reagent in reactions with solid-supported precurso …
A novel route for the synthesis of N-arylamides via the cleavage of aryltriazenes with alkyl or aryl nitriles is presented. We developed a v …
12,299 results
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