Acid-catalyzed alteration of 2,3-dihydro-2,2-dimethyl-7-benzofuranyl (di-n-butylaminosulfenyl)methylcarbamate via nitrogen-sulfur-nitrogen bond cleavage. 2. Separation and identification of polysulfide derivatives

1981 ◽  
Vol 29 (6) ◽  
pp. 1280-1284 ◽  
Author(s):  
Noriharu Umetsu ◽  
Takaaki Nishioka ◽  
Tetsuo R. Fukuto
Keyword(s):  
Bond Cleavage ◽  
Acid Catalyzed ◽  
Nitrogen Bond

Transition state activity coefficients in the acid-catalyzed hydrolysis of amides

1977 ◽  
Vol 55 (16) ◽  
pp. 3050-3057 ◽  
Author(s):  
Tomasz A. Modro ◽  
Keith Yates ◽  
Françoise Beaufays
Keyword(s):  
Transition State ◽  
Bond Cleavage ◽  
Protonated Form ◽  
State Activity ◽  
Alkyl Derivatives ◽  
Amide Hydrolysis ◽  
Conjugate Acid ◽  
Acid Catalyzed ◽  
Hydrolysis Of ◽  
Nitrogen Bond

The transition-state activity coefficient [Formula: see text] approach has been applied to the acid-catalyzed hydrolysis of benzamide and its N-alkyl derivatives. For all systems (with the exception of the N-tert-butyl derivative which reacts via carbon–nitrogen bond cleavage) a uniform type of medium dependence of [Formula: see text] is observed. The reaction shows a pronounced destabilization of S≠ over the whole region of acidity studied, practically identical to that found for the AAc-2 type of ester hydrolysis. This is interpreted in terms of an AoT2 mechanism of amide hydrolysis, that is the rate-determining formation of the oxonium-type tetrahedral intermediate from the O-protonated form of substrate conjugate acid.

ChemInform Abstract: Iron-Catalyzed Synthesis of Glycine Derivatives via Carbon-Nitrogen Bond Cleavage Using Diazoacetate.

ChemInform ◽  
2011 ◽  
Vol 42 (14) ◽  
pp. no-no
Author(s):  
Yoichiro Kuninobu ◽  
Mitsumi Nishi ◽  
Kazuhiko Takai
Keyword(s):  
Bond Cleavage ◽  
Glycine Derivatives ◽  
Nitrogen Bond

Palladium-Promoted Carbon–Nitrogen Bond Cleavage in 1,3,5-Triazinane Derivatives

2020 ◽  
Vol 90 (11) ◽  
pp. 2048-2052
Author(s):  
Yu. I. Murinov ◽  
L. G. Golubyatnikova ◽  
R. A. Khisamutdinov ◽  
A. G. Badamshin ◽  
V. A. Dokichev
Keyword(s):  
Bond Cleavage ◽  
Nitrogen Bond

ChemInform Abstract: Zinc-Acetic Acid Promoted Reductive Carbon-Nitrogen Bond Cleavage Reaction of α-Aminoketones.

ChemInform ◽  
2014 ◽  
Vol 45 (24) ◽  
pp. no-no
Author(s):  
Hideaki Fujii ◽  
Kyoko Ishikawa ◽  
Miyuki Tomatsu ◽  
Hiroshi Nagase
Keyword(s):  
Acetic Acid ◽  
Bond Cleavage ◽  
Cleavage Reaction ◽  
Bond Cleavage Reaction ◽  
Nitrogen Bond

Bond cleavage in acid-catalyzed hydrolysis of vinyl phosphates

1972 ◽  
Vol 94 (10) ◽  
pp. 3676-3677 ◽  
Author(s):  
Edward P. Lyznicki ◽  
Thomas T. Tidwell
Keyword(s):  
Bond Cleavage ◽  
Acid Catalyzed ◽  
Hydrolysis Of

Carbon–nitrogen bond cleavage of pyridine with two molecular substituted allenoates: access to 2-arylpyrimidin-4(3H)-one

2018 ◽  
Vol 54 (100) ◽  
pp. 14128-14131 ◽  
Author(s):  
Tao Jin ◽  
Hongdong Yuan ◽  
Shikuan Su ◽  
Xueshun Jia ◽  
Chunju Li ◽  
...  
Keyword(s):  
Benzene Ring ◽  
Ring Opening ◽  
Pyridine Ring ◽  
Bond Cleavage ◽  
Ring System ◽  
Nitrogen Bond

A DABCO-catalyzed annulation reaction of pyridin-2-amine and substituted allenoates enables the ring-opening of a pyridine ring system and the formation of two new rings including a pyrimidinone ring and a benzene ring.

scholarly journals Transcriptomic response of Gordonia sp. strain NB4-1Y when provided with 6:2 fluorotelomer sulfonamidoalkyl betaine or 6:2 fluorotelomer sulfonate as sole sulfur source

2020 ◽  
Vol 31 (4-6) ◽  
pp. 407-422
Author(s):  
Eric M. Bottos ◽  
Ebtihal Y. AL-shabib ◽  
Dayton M. J. Shaw ◽  
Breanne M. McAmmond ◽  
Aditi Sharma ◽  
...  
Keyword(s):  
Potential Role ◽  
Bond Cleavage ◽  
Transformation Products ◽  
Sulfur Source ◽  
Transcriptomic Response ◽  
Film Forming ◽  
Total Proteome ◽  
Polyfluoroalkyl Substances ◽  
Sulfur Containing ◽  
Nitrogen Bond

Abstract Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are environmental contaminants of concern. We previously described biodegradation of two PFAS that represent components and transformation products of aqueous film-forming foams (AFFF), 6:2 fluorotelomer sulfonamidoalkyl betaine (6:2 FTAB) and 6:2 fluorotelomer sulfonate (6:2 FTSA), by Gordonia sp. strain NB4-1Y. To identify genes involved in the breakdown of these compounds, the transcriptomic response of NB4-1Y was examined when grown on 6:2 FTAB, 6:2 FTSA, a non-fluorinated analog of 6:2 FTSA (1-octanesulfonate), or MgSO4, as sole sulfur source. Differentially expressed genes were identified as those with ± 1.5 log2-fold-differences (± 1.5 log2FD) in transcript abundances in pairwise comparisons. Transcriptomes of cells grown on 6:2 FTAB and 6:2 FTSA were most similar (7.9% of genes expressed ± 1.5 log2FD); however, several genes that were expressed in greater abundance in 6:2 FTAB treated cells compared to 6:2 FTSA treated cells were noted for their potential role in carbon–nitrogen bond cleavage in 6:2 FTAB. Responses to sulfur limitation were observed in 6:2 FTAB, 6:2 FTSA, and 1-octanesulfonate treatments, as 20 genes relating to global sulfate stress response were more highly expressed under these conditions compared to the MgSO4 treatment. More highly expressed oxygenase genes in 6:2 FTAB, 6:2 FTSA, and 1-octanesulfonate treatments were found to code for proteins with lower percent sulfur-containing amino acids compared to both the total proteome and to oxygenases showing decreased expression. This work identifies genetic targets for further characterization and will inform studies aimed at evaluating the biodegradation potential of environmental samples through applied genomics. Graphic Abstract

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