Dilithiated
WebSix-coordinate carbon: 9,9-Dilithiofluorene–thf complex (see picture) crystallizes as chains of lithium atoms which are alternately bridged by fluorenylidene and THF units.These polymer chains are held together by Li–C π and σ interactions; the tetrametallated carbon atom is six-coordinated. WebSelect search scope, currently: articles+ all catalog, articles, website, & more in one search; catalog books, media & more in the Stanford Libraries' collections; articles+ journal articles & other e-resources
Dilithiated
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WebAug 27, 2014 · The lithiation of ethylenediamine by LiH is a stepwise process to form the partially lithiated intermediates LiN (H)CH 2 CH 2 NH 2 and [LiN (H)CH 2 CH 2 NH 2 ] [LiN (H)CH 2 CH 2 N (H)Li] 2 prior to the formation of dilithiated ethylenediamine LiN (H)CH 2 … WebTwo symmetrically doubly lithium-bridged structures for dilithiated propene,CH CHCHLi() and (), are indicated to be comparably stable by (3-21G//3-21G) calculations.
WebThis article is published in Journal of Organic Chemistry.The article was published on 1975-11-01. It has received 4 citation(s) till now. WebReaction of dilithiated 1,2-diesters with β-bromoethyloxirane. Synthesis of annelated γ-lactones. Tetrahedron Letters 1987, 28 (3) , 351-352.
WebThe dilithiated anion (6) obtained by reaction of (E)-N-isopropyl-3-tosylacrylamide with 2 equiv. of methyl-lithium at –78 °C is a new and efficient β-acylvinyl anion equivalent useful in the synthesis of substituted 3-tosyl-α,β-butenolides (8) by reaction with aldehydes followed by treatment with hydrochloric acid.In the absence of acid the process leads to the γ … WebJan 1, 1978 · The dilithiated trimethylacetamide 2e is not colored. All of the dilithiated allylamides react rapidly with butyl iodide and other primary halides at -78 The N …
WebJun 3, 2002 · Dilithiated norephedrine and ephedrine have been utilised in the enantioselective rearrangement of cyclic epoxides to allylic alcohols, with dilithiated norephedrine generally giving the best ...
WebAug 8, 2016 · A combination of 1H, 6Li, 13C, and 15N NMR spectroscopies and density functional theory computations explores the formation of mixed aggregates by a dilithium salt of a C2-symmetric chiral tetraamine (Koga’s base). Lithium halides, acetylides, alkoxides, and monoalkylamides form isostructural trilithiated mixed aggregates with few … the young salinger mordant yet hopefulWeb1,3-Dithianes and 1,3-dithiolanes can easily be prepared from carbonyl compounds with 1,3-propanedithiol or 1,2-ethanedithiol in the presence of a Brönsted or a Lewis acid catalyst. Removal of a dithiane protection … the young royals castWebWith 2 mol equiv. of butyllithium thieno [3,2- b ]thiophene gives its 2,5-dilithiated derivative and its 3,6-dibromo derivative gives the 3,6-dilithiated compound. By quenching with suitable electrophilic reagents these dilithiated compounds have been converted into various 2,5- or 3,6-disubstituted thieno [3,2- b ]thiophenes, respectively. the young royals season 3WebThe dilithiated anion (6) obtained by reaction of (E)-N-isopropyl-3-tosylacrylamide with 2 equiv. of methyl-lithium at –78 °C is a new and efficient β-acylvinyl anion equivalent … safeway market near meWebJan 1, 1985 · Dilithiated species 3 should have utility for attaining varied thiophene substitution patterns in general and 2,3isubstitution in particular. It may also stimulate … the young romantic a portrait of yundiWeb@article{osti_5418965, title = {Nature of carbon-lithium bonding in dilithiated polynuclear aromatics: an MNDO study}, author = {Sygula, A and Lipkowitz, K and Rabideau, P W}, … safeway market street pharmacyWebAug 22, 2006 · Dilithiated 1-benzoylacetone was prepared in excess lithium diisopropylamide and condensed with several lithiated methyl salicylates, followed by acid cyclization to 2- (4-oxo-4 H -1-benzopyran-2-yl)-1-phenylethanones (2 … the young royals series season 2