GRIGNARD REAGENT SÖZCÜĞÜNÜN KÖKEN BİLGİSİ
Named after Victor Grignard (1871–1934), French chemist.
GRIGNARD REAGENT SÖZCÜĞÜ İNGILIZCE DİLİNDE NE ANLAMA GELİR?
Grignard reaksiyonu
Grignard reaksiyonu, aldehit veya ketonda bir karbonil grubuna alkil, vinil veya aril-magnezyum halidlerin eklendiği bir organometalik kimyasal reaksiyontur. Bu reaksiyon, karbon-karbon bağlarının oluşumu için önemli bir araçtır. Bir organik halid ile magnezyum reaksiyonu, bir Grignard reaksiyonu değil, bir Grignard reaktifi sağlar. Grignard reaksiyonları ve reaktifleri Fransız kimyager François Auguste Victor Grignard tarafından keşfedildi ve 1912 Nobel Kimya Ödülünü aldı. Grignard reaktifleri organolityum reaktiflerine benzerdir, çünkü her ikisi de yeni karbon-karbon bağları oluşturabilen güçlü nükleofillerdir.
İngilizce sözlükte Grignard reagent sözcüğünün tanımı
Sözlükteki Grignard reaktifinin tanımı organik metalik ayıraçlardan herhangi biridir, RMgX genel formülüne sahiptir, burada R organik bir gruptur ve X bir halojen atomudur: organik bileşiklerin sentezinde kullanılır.
«GRIGNARD REAGENT» İLE İLİŞKİLİ İNGILIZCE KİTAPLAR
Grignard reagent sözcüğünün kullanımını aşağıdaki kaynakça seçkisinde keşfedin.
Grignard reagent ile ilişkili kitaplar ve İngilizce edebiyattaki kullanımı ile ilgili bağlam sağlaması için küçük metinler.
1
Handbook of
Grignard Reagents
Other recommended preparations can be found within this book (see especially
Chapters 3 and 4) and in the literature [continuous process Ref. 41 and batch
process Refs. 42, 43]. VI. ALTERNATIVE METHODS FOR GRIGNARD REAGENT
...
Gary S. Silverman, Philip E. Rakita,
1996
2
Mechanism and Synthesis
2.4.3 Reaction of a Grignard reagent with oxiranes — the preparation of primary
alcohols So far. we have seen that Grignard reagents act as nucleophiles, and
react with carbon electrophiles such as carbonyls. The one reaction we have not
...
Peter Taylor, Open University,
2002
3
Organic Chemistry: An Acid—Base Approach
15.10 Write out the reaction products formed when the Grignard reagent of 1-
bromopropane is mixed with acetylene. 15.11 Is a Grignard reagent formed when
benzyl bromide is heated with magnesium metal in a mixture of diethyl ethyl and
...
4
Grignard reagents: new developments
The Grignard reagent is one of the most useful and versatile reagents known to the organic chemist and 100 years after its discovery, this book presents authoritative perspectives on the significant developments taking place using Grignard ...
Herman Glenn Richey,
2000
5
The Last American Frontier
R"X +Mg^»R-Mg-X Alkyl Alkylmagnesium halide halide CH3-I + Mg^»CH3-Mg-I
Methylmagnesium iodide C2HrI + Mg^»C2H5-Mg-I Ethylmagnesium iodide For
an alkyl halide, the ease of formation of Grignard reagent is in the order RI > RBr
...
6
Organic Reactions Stereochemistry And Mechanism (Through ...
ethyl groups provide a hydrocarbon environment which acts as a solvent for the
alkyl portion of the Grignard reagent (I, Scheme 4.131). O R--Mg— X Vsolvation
of an alkyl magnesium halide by diethyl ether X R X 2RMgX « R:Mg + MgX2 R—
...
7
Comprehensive Organic Functional Group Transformations: ...
methodology has been applied to generate other (trialkylsilyl)methyl Grignard
reagents <84TL4249. 92CL2047). For example, treatment of l,2-bis(bromomethyl
)tetramethyldisilane with magnesium in ether gave the di-Grignard reagent (284)
in ...
Alan R. Katritzky, Otto Meth-Cohn, Gordon W. Kirby,
1995
oxidized to Mg2+ and produces a species with the general formula RMgX, called
a Grignard reagent. Mg diethyl ether A Grignard reagent Isolated Grignard
reagents are actually polymetallic clusters, often having two, four, or six
magnesium ...
9
Organic Reactions And Their Mechanisms
Formation of a Grignard reagent involves the transfer of an electron from the
metal to the alkyl halide to give an anion radical and its fragmentation to an alkyl
radical and a halide anion. The alkyl radical rapidly combines with a metal atom
to ...
10
Aliphatic Compounds: Sulphur, Phosphorus Silicon & Boron
of the desired Grignard reagent; this is referred to as the entrainment method
However, the best entrainment technique is to add ethylene dibromide (3
molecules or more) and to use magnesium in excess (6 molecules or more; et ai,
1959).
«GRIGNARD REAGENT» TERİMİNİ İÇEREN HABERLER
Ulusal ve uluslararası basında konuşulanları ve
Grignard reagent teriminin aşağıdaki haberlerde hangi bağlamda kullanıldığını keşfedin.
Indoxamycins A, C and F
The final tetrahydrofuran ring is formed by an efficient cascade (figure 3), beginning with substrate-controlled 1,2-addition of a Grignard reagent ... «Chemistry World, Oca 14»
'Pot-in-a-pot' technique makes impossible cascade reactions easy
... ran an aqueous reaction inside the thimble before using an extremely water-sensitive magnesium-based Grignard reagent on the outside [1]. «Chemistry World, Nis 08»
First Mg(I) complex made
'The fact that the synthetic method employed, reduction of a Grignard reagent with elemental potassium, is so simple adds to the beauty and ... «Chemistry World, Kas 07»
Interview: Creating a stir
For ten years, we struggled to achieve a catalytic asymmetric 1, 4-addition of a Grignard reagent. We knew deep down that it was achievable ... «Chemistry World, Haz 07»