Amminali

Amminale generico

Un amminale o amminoacetale è un gruppo funzionale o un tipo di composto organico che ha due gruppi amminici legati allo stesso atomo di carbonio: -C(NR2)(NR2)-. (Come è abituale in chimica organica, R può rappresentare l'idrogeno o un gruppo alchilico).[1]

I gruppi amminali ed emiamminali sono analoghi agli acetali e agli emiacetali con l'azoto sostituito dall'ossigeno. Gli amminali si trovano, ad esempio, nella sintesi di Fischer dell'indolo. Gli amminali ciclici sono ben conosciuti, essendo normalmente derivati dalla condensazione di una diammina e un'aldeide.[2] Un esempio (anche se non derivato da una diammina) è l'esametilentetrammina derivata dall'ammoniaca e dalla formaldeide.

Eteri emiamminali

Etere emiamminale derivato da un'aldeide (sx) e da un chetone (dx)

Anche gli eteri emiamminali sono a volte chiamati amminali anche se ciò è scoraggiato dallo IUPAC. Gli eteri hanno la seguente struttura: R‴-C(NR'2)(OR")-R⁗. Le glicosilammine sono esempi di eteri emiamminali ciclici.

Note

  1. ^ *(EN) IUPAC Gold Book, "aminals", su goldbook.iupac.org.
  2. ^ Hiersemann, M., Functions bearing two nitrogens, in Katritzky, Alan R. e Taylor, Richard J. K. (a cura di), Comprehensive Organic Functional Group Transformations II, vol. 4, 2005, pp. 411-441, DOI:10.1016/B0-08-044655-8/00075-1.

Voci correlate

Altri progetti

Controllo di autoritàGND (DE) 4325669-7
  Portale Chimica: il portale della scienza della composizione, delle proprietà e delle trasformazioni della materia

Read other articles:

Wilfrid Freeman

Royal Air Force air marshal (1888–1953) Sir Wilfrid Rhodes FreemanSir Wilfrid FreemanBorn(1888-07-18)18 July 1888Died15 May 1953(1953-05-15) (aged 64)AllegianceUnited KingdomService/branchBritish Army (1908–18)Royal Air Force (1918–42)Years of service1908–42RankAir Chief MarshalCommands heldVice-Chief of the Air Staff (1940–42)RAF Staff College, Andover (1933–35)RAF Leuchars (1928–29)Central Flying School (1925–27)No. 2 Flying Training School (1920–22)No. 2 Group (...

 

1832 United Kingdom general election

This article's lead section may be too short to adequately summarize the key points. Please consider expanding the lead to provide an accessible overview of all important aspects of the article. (November 2020) 1832 United Kingdom general election ← 1831 8 December 1832 – 8 January 1833 (1832-12-08 – 1833-01-08) 1835 → ← outgoing memberselected members →All 658 seats in the House of Commons330 seats needed for ...

 

بلوف سيتي (كانساس)

بلوف سيتي   الإحداثيات 37°04′32″N 97°52′31″W / 37.0756°N 97.8753°W / 37.0756; -97.8753  [1] تقسيم إداري  البلد الولايات المتحدة[2]  التقسيم الأعلى مقاطعة هاربر، كانزاس  خصائص جغرافية  المساحة 1.398264 كيلومتر مربع1.398266 كيلومتر مربع (1 أبريل 2010)  ارتفاع 377 متر  عد...

بوب هاويس

بوب هاويس معلومات شخصية الميلاد 4 يناير 1943 (80 سنة)  مواطنة كندا  الحياة العملية المهنة لاعب كرة قدم كندية  الرياضة كرة القدم الكندية  تعديل مصدري - تعديل   بوب هاويس هو لاعب كرة قدم كندية كندي، ولد في 4 يناير 1943.[1] انظر أيضا بوب كاميرون (لاعب كرة قدم كندية) بوب مكن

 

Аманітеха

Аманітеха Давньоєгипетський фараонПравління сер. III ст. до н.е.Попередник АманіслоНаступник Шесепанхенамон Сетепенра Титульні імена Тронне ім'я (преномен): ...-іб-ра    Власне ім'я (номен): Аманітеха   Народився невідомоМісце поховання Мерое Аманітеха (сер. III ...

 

Human rights in North Macedonia

Inalienable fundamental rights to which a person in North Macedonia is inherently entitled This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Human rights in North Macedonia – news · newspapers · books · scholar · JSTOR (November 2013) (Learn how and when to remove this template message) Politics of North Maced...

View of Egmond aan Zee

View of Egmond aan ZeeArtistJacob van RuisdaelYear1650sDimensions31 cm × 35 cm (12 in × 14 in)LocationNationalmuseum, Stockholm View of Egmond aan Zee (c. 1650s) is an oil on canvas painting by the Dutch landscape painter Jacob van Ruisdael.[1] It is an example of Dutch Golden Age painting and is now in the collection of the Nationalmuseum in Stockholm. This painting was documented by Hofstede de Groot in 1911, who wrote; 50. VIEW OF EGMOND ...

 

Flore fossile du district de Kızılcahamam

Feuilles fossilisées de Glyptostrobus europaeus (à gauche) et de Quercus drymeya (à droite) récoltées près de Belpınar, dans le district de Kızılcahamam La flore fossile du district de Kızılcahamam provient d'au moins six gisements du Pliocène situés dans les villages de Güvem et Beşkonak, à 22 km au nord de Kızılcahamam, à 80 km au nord d'Ankara et à 125 km au sud de la côte de la mer Noire. Ces flores fossiles se situent entre 1 000 et 1 500...

 

Sindrom Stevens-Johnson

Artikel ini memberikan informasi dasar tentang topik kesehatan. Informasi dalam artikel ini hanya boleh digunakan hanya untuk penjelasan ilmiah, bukan untuk diagnosis diri dan tidak dapat menggantikan diagnosis medis. Perhatian: Informasi dalam artikel ini bukanlah resep atau nasihat medis. Wikipedia tidak memberikan konsultasi medis. Jika Anda perlu bantuan atau hendak berobat, berkonsultasilah dengan tenaga kesehatan profesional. Sindrom Stevens-JohnsonSeseorang dengan sindrom Stevens–Joh...

Сийское сельское поселение

сельское поселениеМО «Сийское»Сийское сельское поселение Страна  Россия Входит в Пинежский муниципальный районАрхангельской области Адм. центр посёлок Сия Глава поселения Долгощинова Елена Измайловна История и география Часовой пояс MSK (UTC+3) Население Население ↘13...

 

Latvian Olympic Committee

Latvian Olympic CommitteeCountry/Region LatviaCodeLATCreated1922Recognized1923, 1991ContinentalAssociationEOCHeadquartersRiga, LatviaPresidentJānis BuksSecretary GeneralKārlis LejnieksWebsitewww.olimpiade.lv The Latvian Olympic Committee (Latvian: Latvijas Olimpiskā komiteja or LOK) is a non-profit organization that is the National Olympic Committee for Latvia. Its headquarters are in Riga. History 2022 stamp dedicated to the 100th anniversary of the Latvian Olympic Committee The Comm...

 

Transition Extreme

Transition ExtremeAddressAberdeenScotlandCoordinates57°9′15.19″N 2°4′54.08″W / 57.1542194°N 2.0816889°W / 57.1542194; -2.0816889ConstructionBroke ground2006Opened2007 (2007)Construction cost£2.7 millionWebsitetransition-extreme.com Transition Extreme is a sports facility in Queens Links, Aberdeen. It is run by a charity.[1] History Construction on the facility began in April 2006.[2] The idea for Transition Skatepark and Extreme Sports...

Catecholamine

Class of chemical compounds Catecholamines Epinephrine (Adrenaline) Norepinephrine (Noradrenaline) Dopamine Catechol A catecholamine (/ˌkætəˈkoʊləmiːn/; abbreviated CA) is a monoamine neurotransmitter, an organic compound that has a catechol (benzene with two hydroxyl side groups next to each other) and a side-chain amine.[1] Catechol can be either a free molecule or a substituent of a larger molecule, where it represents a 1,2-dihydroxybenzene group. Catecholamines are derived...

 

Bill Murray (footballer, born 1904)

Scottish footballer This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources.Find sources: Bill Murray footballer, born 1904 – news · newspapers · books · scholar · JSTOR (September 2022) Bill Murray (9 November 1904 in Alexandria, Scotland – 1940) was a Scottish footballer who played as a defender. External links...

 

Honey Bee (film)

2013 Indian filmHoney BeeFilm posterDirected byLal Jr.Written byLal Jr.Produced bySiby ThottupuramJobi MandamattomStarringLalAsif AliBhavanaBaburajSreenath BhasiBalu VargheseArchana KaviAssim JamalCinematographyAlbyEdited byRatheesh RajMusic byDeepak DevProductioncompanySJM EntertainmentsDistributed byKalasangham FilmsRelease date 7 June 2013 (2013-06-07) Running time138 minutesCountryIndiaLanguageMalayalamBox officeest. ₹12 crore (US$1.5 million)[1] Honey Bee (a...

Xian Y-7

Artikel ini perlu diwikifikasi agar memenuhi standar kualitas Wikipedia. Anda dapat memberikan bantuan berupa penambahan pranala dalam, atau dengan merapikan tata letak dari artikel ini. Untuk keterangan lebih lanjut, klik [tampil] di bagian kanan. Mengganti markah HTML dengan markah wiki bila dimungkinkan. Tambahkan pranala wiki. Bila dirasa perlu, buatlah pautan ke artikel wiki lainnya dengan cara menambahkan [[ dan ]] pada kata yang bersangkutan (lihat WP:LINK untuk keterangan lebih lanjut...

 

Blue Effect

Czech rock band Blue EffectBlue Effect performing in 2007Background informationOriginPrague, CzechoslovakiaGenresArt rockjazz rockblues rockYears active1968 (1968)–1990 (1990), 2004 (2004)–2016 (2016)LabelsSupraphonPantonPast membersRadim HladíkVladimír MišíkJiří KozelVlado ČechMiloš SvobodaLešek SemelkaJosef KůstkaOldřich VeselýFedor FrešoOldřich KellnerLuboš PospíšilLuboš MandaRadek KřemenákJosef HavlíčekDavid KollerJan KřížekVáclav ZimaVojt...

 

ラスベガス・モーター・スピードウェイ

Las Vegas Motor SpeedwaySuperspeedway at LVMS所在地ネバダ州クラーク郡収容人数142,000所有者Speedway Motorsports, Inc.住所Las Vegas Motor Speedway7000 Las Vegas Blvd. N.Las Vegas, Nevada 89115オープン1971主なイベントNASCAR スプリントカップ・シリーズKobalt Tools 400NASCAR ネイションワイド・シリーズSam's Town 300NASCAR キャンピングワールド・トラックシリーズSmith's 350NHRA Full Throttle Drag Racing SeriesSummitRacing.com N...

2004 Challenge Cup

2004 Powergen Challenge CupDuration9 RoundsHighest attendance73,734Broadcast partnersBBC SportWinners St. HelensRunners-up Wigan WarriorsLance Todd Trophy Sean Long ← 2003 2005 → The 2004 Challenge Cup, known as the Powergen Challenge Cup for sponsorship reasons, was the 103rd staging of the Challenge Cup, a European rugby league cup competition. The competition began in November 2003, and ended with the final in May 2004, which was played at the Millennium Stadium in Cardiff du...

 

Cyborg Superman

Cyborg Superman is a persona that has been used by two supervillains who appear in comic books published by DC Comics. Fictional character biographies Hank Henshaw Main article: Hank Henshaw Comics character Cyborg SupermanPublication informationPublisherDC ComicsFirst appearanceAs Hank Henshaw:The Adventures of Superman #466 (May 1990) As Cyborg Superman:The Adventures of Superman #500 (June 1993)Created byDan JurgensIn-story informationAlter egoHenry Hank HenshawSpeciesHuman/Kryptonian cybo...

 

Strategi Solo vs Squad di Free Fire: Cara Menang Mudah!