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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...

العلاقات الإستونية الكوستاريكية إستونيا كوستاريكا   إستونيا   كوستاريكا تعديل مصدري - تعديل   العلاقات الإستونية الكوستاريكية هي العلاقات الثنائية التي تجمع بين إستونيا وكوستاريكا.[1][2][3][4][5] مقارنة بين البلدين هذه مقارنة عامة ومرجعية لل�...

Sahara beralih ke halaman ini. Untuk kegunaan lain, lihat Sahara (disambiguasi). SaharaPadang pasir besarSatelit Gurun Sahara oleh NASAGeografiKoordinat23°N 13°E / 23°N 13°E / 23; 13Koordinat: 23°N 13°E / 23°N 13°E / 23; 13 Gurun Sahara (Arab: الصحراء الكبرىcode: ar is deprecated , aṣ-ṣaḥrāʼ al-kubrá, 'Gurun Terbesar') adalah nama sebuah padang pasir terbesar di dunia. Nama Sahara diambil dari bahasa Arab yang berar...

2006 South African criminal trial This article is part of a series aboutJacob Zuma Political career African National Congress President (2009–2018) President of the African National Congress (2007–2017) Deputy President (1999–2005) Presidency Mandela Day Marikana strike Domestic policy Infrastructure and nuclear deal HIV/AIDS in South Africa Zuma Must Fall campaign Governments First Cabinet Second Cabinet Elections 2009 2014 Post-presidency 2021 South African unrest Books about Zuma Ene...

Astronomical observatory For the type of biscuit also known as speculoos, see Speculoos. Search for habitable Planets EClipsing ULtra-cOOl StarsAlternative namesSPECULOOS Named afterspeculoos Location(s)Paranal Observatory, Teide Observatory, Chile, Spain OrganizationEuropean Southern ObservatoryUniversity of Liège Telescope styleastronomical surveyinfrared telescopeRitchey–Chrétien telescope Number of telescopes5 Diameter1 m (3 ...

Queensland Open 1982 Sport Tennis Data 21 novembre – 28 novembre Edizione 87ª Superficie Erba Campioni Singolare maschile Charles Fancutt Singolare femminile Wendy Turnbull Doppio maschile Dale Collings / Wayne Hampton Doppio femminile Billie Jean King / Anne Smith 1981 1983 Il Queensland Open 1982 è stato un torneo di tennis giocato sull'erba che fa parte del WTA Tour 1982. Il torneo si è giocato a Brisbane in Australia dal 21 al 28 novembre 1982. Indice 1 Campioni 1.1 Singolare maschi...

Jozef TomkoPresiden Emeritus Komite Kepausan bagi Kongres Ekaristi InternasionalPenunjukan23 Oktober 2001Masa jabatan berakhir1 Oktober 2007PendahuluEdouard GagnonPenerusPiero MariniJabatan lainKardinal-Imam Santa SabinaImamatTahbisan imam12 Maret 1949oleh Luigi TragliaTahbisan uskup15 September 1979oleh Paus Yohanes Paulus IIPelantikan kardinal25 Mei 1985PeringkatKardinal-ImamInformasi pribadiLahir(1924-03-11)11 Maret 1924Udavské, Cekoslowakia (sekarang Slowakia)Wafat8 Agustus 202...

Non-coding RNA molecule Small nucleolar RNA SNORD48Predicted secondary structure and sequence conservation of SNORD48IdentifiersSymbolSNORD48Alt. SymbolsU48RfamRF00282Other dataRNA typeGene; snRNA; snoRNA; C/D-boxDomain(s)EukaryotaGOGO:0006396 GO:0005730SOSO:0000593PDB structuresPDBe In molecular biology, SNORD48 (also known as U48) is a non-coding RNA (ncRNA) molecule which functions in the modification of other small nuclear RNAs (snRNAs). This type of modifying RNA is usually located in th...

2013 film by Anurag Kashyap UglyTheatrical release posterDirected byAnurag KashyapWritten byAnurag KashyapProduced byArun RangachariVivek RangachariAnurag KashyapMadhu MantenaVikas BahlVikramaditya MotwaneStarring Rahul Bhat Ronit Roy Girish Kulkarni Siddhanth Kapoor Tejaswini Kolhapure Vineet Kumar Singh Surveen Chawla CinematographyNikos AndritsakisEdited byAarti BajajMusic bySongs:G. V. Prakash KumarScore:Brian McOmberProductioncompanyPhantom FilmsDistributed byDAR Motion PicturesMagic Clo...

Plan of the Retiro and Fortifications made by the French in 1808, 1809, 1810, 1811, 1812 y 1813 (c. 1813) The citadel of Madrid was a star fort with three fortified enceintes[1] constructed by the French Army during the Peninsular War, in the grounds of the Palacio del Buen Retiro, on the Retiro heights,[note 1] outside the eastern gate of the city of Madrid.[1] Origins Napoleon, on approaching Madrid, considered the vantage-ground of the heights of the Retiro key to t...

Magnesium dihydride redirects here. Not to be confused with magnesium monohydride. Magnesium hydride Names IUPAC name Magnesium hydride Identifiers CAS Number 7693-27-8 Y 3D model (JSmol) Interactive image ChEBI CHEBI:25107 Y ChemSpider 16787263 Y ECHA InfoCard 100.028.824 EC Number 231-705-3 PubChem CID 107663 UNII Y93032D743 Y InChI InChI=1S/Mg.2H YKey: RSHAOIXHUHAZPM-UHFFFAOYSA-N YInChI=1/Mg.2H/rH2Mg/h1H2Key: RSHAOIXHUHAZPM-HZAFDXBCAG SMILES [MgH2] P...

1930 film Hell's AngelsTheatrical release posterDirected byHoward HughesJames Whale (dialogue)[1]Written byHarry BehnHoward EstabrookJoseph Moncure March (uncredited)Produced byHoward HughesStarringBen LyonJames HallJean HarlowCinematographyTony GaudioHarry PerryEdited byDouglass BiggsFrank LawrencePerry Hollingsworth (uncredited)Music byHugo RiesenfeldProductioncompanyThe Caddo Company (de)Distributed byUnited ArtistsRelease dates May 27, 1930 (1930-05-27) (Grauman...

阿尔弗雷德·金赛1955年11月在法蘭克福的金賽出生阿爾弗雷德·查爾斯·金賽1894年6月23日[1] 美國新泽西州霍博肯[1]逝世1956年8月25日(1956歲—08—25)（62歲） 美國印第安納州布卢明顿[1]国籍 美國母校史蒂文斯理工學院鲍登学院哈佛大学知名于針對人類的性學研究：金赛报告、金賽性、性別與生殖研究中心、金賽量表科学生涯研究领域生物学机构印第...

Class of 36 South African 2-8-2 steam locomotives CSAR Class 11 2-8-2South African Class 11 2-8-2Class 11 no. 933, ex CSAR no. 721, Sydenham, 1973Type and originPower typeSteamDesignerCentral South African Railways(P.A. Hyde)BuilderNorth British Locomotive CompanySerial number16207, 16250-16284ModelCSAR Class 11Build date1904Total produced36SpecificationsConfiguration:​ • Whyte2-8-2 (Mikado) • UIC1'D1'h2Driver3rd coupled axleGauge3 ft 6 in (1,067&...

English textile artist, author, and socialist (1834–1896) For other people named William Morris, see William Morris (disambiguation). William MorrisWilliam Morris by Frederick Hollyer, 1887Born(1834-03-24)24 March 1834Walthamstow, Essex, EnglandDied3 October 1896(1896-10-03) (aged 62)Hammersmith, EnglandEducationExeter College, OxfordOccupationsTextile designerpoettranslatorsocialist activistKnown forWallpaper and textile designfantasy fictionmedievalismsocialismNotable workNews f...

American rapper (born 1968) James Smith (rapper) redirects here. For other people, see James Smith. LL Cool JLL Cool J receiving the 2017 Kennedy Center HonorsBornJames Todd Smith (1968-01-14) January 14, 1968 (age 56)Bay Shore, New York, U.S.OccupationsRappersongwriterrecord produceractorYears active1984–presentSpouse Simone Smith ​(m. 1995)​[1]PartnerKidada Jones (1992–1994)[2]Children4[1]Musical careerOriginQueens, New York...

مملكة مالي ماندن كوروفا امبراطورية 1230 – 1600       مملكة ماليعلم امبراطورية مالي في أقصى امتداد لها (تقريبا: 1350) عاصمة نياني القديمة: ثم كانغابا نظام الحكم غير محدّد نظام الحكم إمبراطورية  اللغة الرسمية اللغات الماندية  اللغة لغة المندنكا الديانة الإسلام ما�...

Norwegian multi-purpose sports stadium J.J. Ugland Stadion - LevermyrLocationGrimstad, NorwayCoordinates58°20′44″N 8°35′30″E / 58.345500°N 8.591720°E / 58.345500; 8.591720Capacity3,300[2]ConstructionBuilt1983Opened1983[1]TenantsFK Jerv (football)Amazon Grimstad (football)Sørild FIK (athletics) J.J. Ugland Stadion – Levermyr, more commonly (and formerly) known as Levermyr stadion, is a multi-purpose stadium in Grimstad, Norway and home of ...

Pour les articles homonymes, voir Elmo (homonymie). Cet article est une ébauche concernant une marionnette, un marionnettiste ou le théâtre de marionnettes. Vous pouvez partager vos connaissances en l’améliorant (comment ?) selon les recommandations des projets correspondants. Elmo aux bras d'un membre du BBC gang Elmo est un personnage de fiction issu de la série télévisée de marionnettes Sesame Street. Il apparaît sous le nom de « Baby Monster » en 1972. Il fait...

В Википедии есть статьи о других людях с фамилией Хадсон. Марта Хадсон Общая информация Дата и место рождения 21 марта 1939(1939-03-21) (85 лет)Истмен[вд], Джорджия, США Гражданство  США Рост 152 см Вес 53 кг Международные медали Олимпийские игры Золото Рим 1960 эстафета 4×100 м &...