Share
VIDEOS 1 TO 50
How to say Angeli-Rimini reaction in German?
How to say Angeli-Rimini reaction in German?
Published: 2017/03/13
Channel: Learn German Words
Daniele Baldelli & DJ Rocca - Relextion (Ray Mang Knee Jerk Reaction Mix)
Daniele Baldelli & DJ Rocca - Relextion (Ray Mang Knee Jerk Reaction Mix)
Published: 2014/07/22
Channel: Gazzz696
Justice League - Comic-Con Sneak Peek [HD]
Justice League - Comic-Con Sneak Peek [HD]
Published: 2017/07/22
Channel: Warner Bros. Pictures
Party time at San Siro: 2-0 and we
Party time at San Siro: 2-0 and we're through
Published: 2017/08/04
Channel: AC Milan
REAZIONE AI MUSICALLY ITALIANI PIÙ FIGHI !!
REAZIONE AI MUSICALLY ITALIANI PIÙ FIGHI !!
Published: 2016/11/28
Channel: Ace Di
Anoressia
Anoressia
Published: 2008/01/16
Channel: sofia88noveva
Here
Here's how to fill up and empty San Siro in just 25 seconds
Published: 2017/08/04
Channel: AC Milan
Fidanzamento ufficiale
Fidanzamento ufficiale
Published: 2016/11/18
Channel: Umberto Caruso
GLI EFFETTI DELLE DROGHE SU SURRY
GLI EFFETTI DELLE DROGHE SU SURRY
Published: 2017/07/28
Channel: Xx L3sKy&4nGy xX
Frosinone, rubava ai pazienti dell
Frosinone, rubava ai pazienti dell'ospedale: arrestata infermiera
Published: 2016/09/29
Channel: Vista Agenzia Televisiva Nazionale
Grétar Guðmundsson - Bílaspítalinn "Clayderman Remix"
Grétar Guðmundsson - Bílaspítalinn "Clayderman Remix"
Published: 2012/02/02
Channel: MrKanturinn
Mateo Musacchio
Mateo Musacchio's first words in the Red&Black
Published: 2017/06/05
Channel: AC Milan
Lac Operon
Lac Operon
Published: 2008/01/30
Channel: ndsuvirtualcell
DJ EBREO live from ARLECCHINO DISCO 16-12-2016
DJ EBREO live from ARLECCHINO DISCO 16-12-2016
Published: 2016/12/17
Channel: Paolo Fava
Swift justice: Jury takes Taylor
Swift justice: Jury takes Taylor's side in groping lawsuit
Published: 2017/08/15
Channel: Associated Press
Quanto tempo ci vuole per riprendere la normale masticazione?
Quanto tempo ci vuole per riprendere la normale masticazione?
Published: 2015/05/29
Channel: Congresso Ottavi
Kojak pt.1 Dj Mozart, Rubens & Gigi Della Villa 24\11\2006
Kojak pt.1 Dj Mozart, Rubens & Gigi Della Villa 24\11\2006
Published: 2017/10/17
Channel: William Pasolini
i barboni 03. la violenza contro di loro
i barboni 03. la violenza contro di loro
Published: 2012/01/20
Channel: UchihaMadaraLooL99
The Doctor Who Tag II Helena Luce
The Doctor Who Tag II Helena Luce
Published: 2017/01/31
Channel: Helena Luce
VLOG #002 Summer 2k17 in OndaLand Aquapark Novara, Italy ♥️
VLOG #002 Summer 2k17 in OndaLand Aquapark Novara, Italy ♥️
Published: 2017/08/14
Channel: Ynah Discutido
Team Photo Shoot like you
Team Photo Shoot like you've never seen before
Published: 2017/09/12
Channel: AC Milan
#ACMAUS - Training Session
#ACMAUS - Training Session
Published: 2017/11/22
Channel: AC Milan
DSCN0151
DSCN0151
Published: 2016/03/20
Channel: picchiatella1
Esoscheletro ReWalk - Intervista a Carmine Consalvi
Esoscheletro ReWalk - Intervista a Carmine Consalvi
Published: 2016/10/10
Channel: Progettiamo Autonomia - Barbieri Srl
Sicuri ad ogni età: "Se permette mi presento"
Sicuri ad ogni età: "Se permette mi presento"
Published: 2014/08/13
Channel: poliziadistato
BALLIAMO IL COSMIC SOUND
BALLIAMO IL COSMIC SOUND
Published: 2010/01/10
Channel: GianfrancoByPreciso
Altarimini. Museo da premio oscar per Federico Fellini
Altarimini. Museo da premio oscar per Federico Fellini
Published: 2009/10/20
Channel: altarimini
Obelix Beach-Funky Summer 4:Rubens dj
Obelix Beach-Funky Summer 4:Rubens dj
Published: 2012/06/21
Channel: sergio m. corazza
LEGGO INSEGRETO.IT? - Sarah Carta
LEGGO INSEGRETO.IT? - Sarah Carta
Published: 2017/01/28
Channel: Sarah Carta
DJ Pery @ Arlecchino Disco 06th.02.2015 (Video di Cinzia T.)
DJ Pery @ Arlecchino Disco 06th.02.2015 (Video di Cinzia T.)
Published: 2015/02/16
Channel: Cinzia Tabanelli
How to say angelical in German?
How to say angelical in German?
Published: 2017/03/12
Channel: Learn German Words
SPORT FOR ALL: Sport Exclusively for Everyone - Indoor Rowing
SPORT FOR ALL: Sport Exclusively for Everyone - Indoor Rowing
Published: 2017/08/10
Channel: AC Milan
La Città Più Bella Del Pianeta Terra
La Città Più Bella Del Pianeta Terra
Published: 2017/10/14
Channel: Wissen
Miki e l
Miki e l'amico esoscheletro!
Published: 2013/09/06
Channel: Raffaella Balducci
Daniele Baldelli & DJ Rocca - Sartana (Relextion EP)
Daniele Baldelli & DJ Rocca - Sartana (Relextion EP)
Published: 2014/07/22
Channel: Gazzz696
Ravenna estate 2012  Si balla ancora Paranà
Ravenna estate 2012 Si balla ancora Paranà
Published: 2012/08/08
Channel: Sandro Scrittori
Paletta replies to Trotta: Crotone-Milan 1-1
Paletta replies to Trotta: Crotone-Milan 1-1
Published: 2017/05/02
Channel: AC Milan
Baia degli Angeli: my favourite songs
Baia degli Angeli: my favourite songs
Published: 2016/05/11
Channel: Marika Kristyn
WFO Bozen Trailer 2k15
WFO Bozen Trailer 2k15
Published: 2015/05/28
Channel: David Unterholzner
How to say angelically in German?
How to say angelically in German?
Published: 2017/03/12
Channel: Learn German Words
How to say angelique in German?
How to say angelique in German?
Published: 2017/03/13
Channel: Learn German Words
How to say angelica-tree in German?
How to say angelica-tree in German?
Published: 2017/03/12
Channel: Learn German Words
TV Internet 1 - Francesco Valente portavoce M5S Alba Adriatica
TV Internet 1 - Francesco Valente portavoce M5S Alba Adriatica
Published: 2013/03/07
Channel: WEB TV INTERNET 1
Malpa Gol! Forlì no stop - Atlas Santo Stefano
Malpa Gol! Forlì no stop - Atlas Santo Stefano
Published: 2015/02/21
Channel: gabri ele
Finale Tim Cup Juventus Napoli  Parte della premiazione.AVI
Finale Tim Cup Juventus Napoli Parte della premiazione.AVI
Published: 2012/05/21
Channel: Florapiro83
SINTESI AMICHEVOLE CASERTANA-TERNANA
SINTESI AMICHEVOLE CASERTANA-TERNANA
Published: 2017/08/13
Channel: Sportcasertano Tv
Mtb Presolana Race   11° Prova del circuito Orobie Cup 2013
Mtb Presolana Race 11° Prova del circuito Orobie Cup 2013
Published: 2013/09/17
Channel: Lorenzo Noris
Preg.della salvezza+Catechesi Ap 2,12-17+preg Guarigione (ENGLISH;FRANÇAIS; ESPAÑOLA)
Preg.della salvezza+Catechesi Ap 2,12-17+preg Guarigione (ENGLISH;FRANÇAIS; ESPAÑOLA)
Published: 2012/01/07
Channel: annamaria scarfogliero
NEXT
GO TO RESULTS [49 .. 98]

WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
Jump to: navigation, search

The Angeli–Rimini reaction is an organic reaction between an aldehyde and the sulfonamide N-hydroxybenzenesulfonamide in presence of base forming an hydroxamic acid.

The Angeli-Rimini reaction

The other reaction product is a sulfinic acid. The reaction was discovered by the two Italian chemists Angelo Angeli and Enrico Rimini (1874–1917), and was published in 1896.[1][2]

Chemical test[edit]

The reaction is used in a chemical test for the detection of aldehydes in combination with ferric chloride. In this test a few drops of aldehyde containing specimen is dissolved in ethanol, the sulfonamide is added together with some sodium hydroxide solution and then the solution is acidified to Congo red. An added drop of ferric chloride will turn the solution an intense red when aldehyde is present. The sulfonamide can be prepared by reaction of hydroxylamine and benzenesulfonyl chloride in ethanol with potassium metal.[3]

chelation with iron

Reaction mechanism[edit]

The reaction mechanism for this reaction is not clear and several potential pathways exist.[4] The N-hydroxybenzenesulfonamide 1 or its deprotonated form 2 is a nucleophile in reaction with the aldehyde 3 to intermediate 4. After intramolecular proton exchange to 5 a sulfinic acid anion is split off and hydroxamic acid 8 results through nitrone 6 and intermediate 7. Alternatively aziridine intermediate 9 directly forms the end=product. The formation of the nitrene intermediate 10 is ruled out given the lack of reactivity of the chemical mixture towards simple alkenes.

The mechanism of the Angeli-Rimini reaction

Scope[edit]

The Angeli–Rimini reaction has recently been applied in solid-phase synthesis with the sulfonamide covelently linked to a polystyrene solid support.[5]

References[edit]

  1. ^ Angelo Angeli Gazz. Chim. Ital. 1896, 26, 17.
  2. ^ Rimini, E. Gazz. Chim. Ital. 1901, 31, 84.
  3. ^ Gattermann, Ludwig, The Practical Methods of Organic Chemistry, 1937 Link (4.5 MB)
  4. ^ Reaction of aldehydes with N-hydroxybenzenesulfonamide. Acetal formation catalyzed by nucleophilesAlfred Hassner, E. Wiederkehr, and A. J. Kascheres J. Org. Chem.; 1970; 35(6) pp 1962 - 1964; (doi:10.1021/jo00831a052)
  5. ^ Angeli-Rimini's Reaction on Solid Support: A New Approach to Hydroxamic Acids Andrea Porcheddu and Giampaolo Giacomelli J. Org. Chem.; 2006; 71(18) pp 7057 - 7059; (Note) (doi:10.1021/jo061018g)

Disclaimer

None of the audio/visual content is hosted on this site. All media is embedded from other sites such as GoogleVideo, Wikipedia, YouTube etc. Therefore, this site has no control over the copyright issues of the streaming media.

All issues concerning copyright violations should be aimed at the sites hosting the material. This site does not host any of the streaming media and the owner has not uploaded any of the material to the video hosting servers. Anyone can find the same content on Google Video or YouTube by themselves.

The owner of this site cannot know which documentaries are in public domain, which has been uploaded to e.g. YouTube by the owner and which has been uploaded without permission. The copyright owner must contact the source if he wants his material off the Internet completely.

Powered by YouTube
Wikipedia content is licensed under the GFDL and (CC) license