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The Barton–Zard reaction is a route to pyrrole derivatives via the reaction of a nitroalkene with an α-isocyanide under basic conditions.[1] It is named after Derek Barton and Samir Zard who first reported it in 1985.[2] Mechanism The mechanism consists of five steps: Base catalyzed carbonyl enolization of the α-isocyanide. Michael-type addition between the α-isocyanide carbonyl enolate and the nitroalkene. 5-endo-dig cyclization (see: Baldwin's rules). Base catalyzed eli...

الاتحاد الملكي الإسباني لكرة القدم الاتحاد الملكي الإسباني لكرة القدم   الاسم المختصر RFEF الرياضة كرة القدم أسس عام 1909 (منذ 115 سنة) الرئيس لويس روبياليسبيدرو روشا (مؤقت) المقر لاس روزاس دي مدريد  الانتسابات الفيفا : 1913 الاتحاد الأوروبي  : 1954 رمز الفيفا ESP  الموقع ا...

DozhdДождьDiluncurkan27 April 2010; 13 tahun lalu (2010-04-27)[1]PemilikDozhd media holdingFormat gambar 576i (16:9 SDTV) 1080i (16:9 HDTV) NegaraRusiaBahasaRusiaKantor pusatMoskwa, RusiaSitus webtvrain.tv Ketersediaan SatelitAstra 31.5°E12070 H 30000 3/4 (SD)Ekspress-AT112207 R 27500 3/4 (SD)KabelDom.ruSaluran 707 (HD)[2] Dozhd (bahasa Rusia: Дождь; IPA: [ˈdoʂtʲ] ( simak); ditulis sebagai До///дь), juga dikenal sebagai TV Rain, adalah sebu...

Convergence pattern redirects here. Not to be confused with a video convergence pattern or test card. Fire from the eight machine guns of a Hawker Hurricane is shown converging to a point, then diverging. (Drawing not to scale.) In aerial gunnery, gun harmonisation, convergence pattern, convergence zone, convergence point or bore-sight point refers to the aiming of fixed guns or cannon carried in the wings of a fighter aircraft. The wing guns in fighters were typically not bore-sighted to poi...

العلاقات السورية الكوستاريكية سوريا كوستاريكا   سوريا   كوستاريكا تعديل مصدري - تعديل   العلاقات السورية الكوستاريكية هي العلاقات الثنائية التي تجمع بين سوريا وكوستاريكا.[1][2][3][4][5] مقارنة بين البلدين هذه مقارنة عامة ومرجعية للدولتين: وجه ...

Cet article dresse la liste chronologique des souverains de Serbie et de Yougoslavie.Armoiries de la Serbie Seigneur serbes dans le Caucase Vers 41-50 apr. J.-C. : Zorsines, seigneurs des Serbes en terre sarmate Seigneurs serbes en Europe centrale avant l'installation en Europe du Sud Zvonimir, (632-675), père de Drvan, vers le début du VIe siècle début de la dynastie Drvenarovic 626 : Drvan, prince de Serbie blanche, aujourd'hui en Allemagne (Lusace, Sorabe) 620-680 :...

News programme This article is about the news programme. For the video game, see 60 Seconds! 60 Seconds60 Seconds logo used from 2008–2016Created byBBC NewsCountry of originUnited KingdomOriginal languageEnglishProductionProduction locationsBroadcasting House, LondonRunning time1 minuteOriginal releaseNetwork BBC Choice (2001–2003) BBC Three (2003–2016) Release16 July 2001 (2001-07-16) –16 February 2016 (2016-02-16)RelatedThe 7 O'Clock News 60 Seconds is a short-new...

County in Kentucky, United States For other uses, see Webster County. County in KentuckyWebster CountyCountyWebster County Courthouse in DixonLocation within the U.S. state of KentuckyKentucky's location within the U.S.Coordinates: 37°31′N 87°41′W / 37.52°N 87.68°W / 37.52; -87.68Country United StatesState KentuckyFounded1860Named forDaniel WebsterSeatDixonLargest cityProvidenceArea • Total336 sq mi (870 km2) • L...

此條目可参照英語維基百科相應條目来扩充。 (2021年5月6日)若您熟悉来源语言和主题，请协助参考外语维基百科扩充条目。请勿直接提交机械翻译，也不要翻译不可靠、低品质内容。依版权协议，译文需在编辑摘要注明来源，或于讨论页顶部标记{{Translated page}}标签。 约翰斯顿环礁Kalama Atoll 美國本土外小島嶼 Johnston Atoll 旗幟颂歌：《星條旗》The Star-Spangled Banner約翰斯頓環礁�...

1968 speech by U.S. Senator Robert F. Kennedy For RFK's prepared, formal response to the assassination, see On the Mindless Menace of Violence. Robert F. Kennedy giving his speech Audio of the speech Problems playing this file? See media help. On April 4, 1968, United States Senator Robert F. Kennedy of New York delivered an improvised speech several hours after the assassination of Martin Luther King Jr. Kennedy, who was campaigning to earn the Democratic Party's presidential nomination, mad...

EnchantedPoster film EnchantedSutradaraKevin LimaProduserBarry JosephsonBarry SonnenfeldDitulis olehBill KellyPemeranAmy AdamsPatrick DempseyJames MarsdenTimothy SpallIdina MenzelSusan SarandonNaratorJulie AndrewsPenata musikAlan MenkenSinematograferDon BurgessPenyuntingStephen A. RotterGregory PerlerPerusahaanproduksiWalt Disney PicturesSonnenfeld Josephson EntertainmentDistributorWalt Disney Studios Motion PicturesTanggal rilis 20 Oktober 2007 (2007-10-20) (Festival Film Lond...

  لمعانٍ أخرى، طالع العيون (توضيح). العيون الاسم الرسمي العيون[1]  الإحداثيات 24°29′00″N 39°50′00″E / 24.4833°N 39.8333°E / 24.4833; 39.8333   تقسيم إداري  البلد السعودية[2]  التقسيم الأعلى منطقة المدينة المنورةالمنطقة الشرقية  عدد السكان  عدد السكان 33042 (2...

 本表是動態列表，或許永遠不會完結。歡迎您參考可靠來源來查漏補缺。 潛伏於中華民國國軍中的中共間諜列表收錄根據公開資料來源，曾潛伏於中華民國國軍、被中國共產黨聲稱或承認，或者遭中華民國政府調查審判，為中華人民共和國和中國人民解放軍進行間諜行為的人物。以下列表以現今可查知時間為準，正確的間諜活動或洩漏機密時間可能早於或晚於以下所歸�...

BildLogoStato Germania Linguatedesco PeriodicitàQuotidiano GenereTabloid FormatoLenzuolo FondatoreAxel Springer Fondazione1952 SedeBerlino EditoreAxel Springer SE Tiratura5 milioni (2 luglio 2002) DirettoreMarion Horn Sito webbild.de   Modifica dati su Wikidata · Manuale Bild (anche Bild-Zeitung, come è chiamato in Germania) è un quotidiano di tipo tabloid tedesco, fondato nel 1952 da Axel Springer. Diffuso anche nel resto d'Europa, ha una tiratura giornaliera di oltre 5 mi...

Passenger rail transport from airport to nearby city Airport Express Train redirects here. For other uses, see Airport Express Train (disambiguation). For stations named Airport, see Airport Station. 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: Airport rail link – news · newspapers · books · scholar · JST...

Governing board of the University of California Regents of the University of CaliforniaSeal of the University of CaliforniaGoverning board overviewFormedJune 18, 1868 (1868-06-18)[1][2]TypeState university system governing boardJurisdictionUniversity of California systemHeadquartersOakland, California, United StatesAnnual budget$47.1 billion (2022–2023)[3]Governing board executivesGavin Newsom, President and Governor of CaliforniaRichard Leib, ChairGar...

Uppslagsordet ”Heron” leder hit. För andra betydelser, se Heron (olika betydelser). Heron, bild från 1688. Heron från Alexandria var en grekisk fysiker och matematiker[1] som föddes omkring år 10 och dog cirka år 70,[2] och som var verksam i Alexandria. Heron konstruerade vinpressar, kranar, pumpar, vattenorglar och krigsmaskiner. Han uppfann Herons ångkula (eolipilen) som förebådade ångmaskinen, men som aldrig användes för praktiska behov. Herons källa. Verksamhet ...

Head of the British Army Not to be confused with Chief of the Defence Staff (United Kingdom). Chief of the General StaffFlag of the Chief of the General StaffIncumbentGeneral Sir Roland Walkersince 15 June 2024Ministry of DefenceBritish ArmyAbbreviationCGSMember ofDefence CouncilArmy BoardChiefs of Staff CommitteeReports toChief of the Defence StaffNominatorSecretary of State for DefenceAppointerThe MonarchOn the advice of the Prime Minister, subject to formal approval by the King-in-Cou...

Town in North Carolina, United StatesHillsborough, North CarolinaTownOld Orange County Courthouse SealMotto(s): Around the Corner, Ahead of the Curve. - Orange County Motto[1]Location of Hillsborough, North CarolinaCoordinates: 36°04′48″N 79°06′39″W / 36.08000°N 79.11083°W / 36.08000; -79.11083CountryUnited StatesStateNorth CarolinaCountyOrangeNamed forWills Hill, 1st Marquess of Downshire[2]Area[3] • Total5.67 ...

39th season of Europe's secondary club football tournament organised by UEFA 2009–10 UEFA Europa LeagueThe Volksparkstadion in Hamburg hosted the final.Tournament detailsDates17 September 2009 – 12 May 2010 (competition proper)2 July – 27 August 2009 (qualifying)Teams48+8 (competition proper)159+33 (total) (from 53 associations)Final positionsChampions Atlético Madrid (1st title)Runners-up FulhamTournament statisticsMatches played205Goals scored539 (2.63 per match)Top sc...