55047-00-2Relevant academic research and scientific papers
The stereochemistry of electrolysis and samarium diiodide-induced cyclization between carbonyl and enone system in inter- and intramolecular coupling
Sono, Masakazu,Shoji, Tsutomu,Tamaki, Tatsuya,Kishi, Satoko,Tori, Motoo
, p. 517 - 528 (2008/03/12)
Both the inter- and intramolecular cyclization of the carbonyl compounds with α,β-unsaturated carbonyl system using samarium diiodide and electrolysis were carried out. The stereochemistry of the products was compared each other.
Electrostatic modulation of hydroxyl group ionization in acidic media. Evidence for the competitive operation of intramolecular SN2 reactions
Negri, Joanna T.,Paquette, Leo A.
, p. 8835 - 8841 (2007/10/02)
The acid-catalyzed cyclodehydration of the cis and trans isomers of 2-substituted 1-(3-hydroxypropyl)cyclohexanols results in the formation of spirocyclic tetrahydrofurans. The stereochemical course of these reactions is highly varied, ranging from a domi
SILAKETALS AS TETHERS IN INTRAMOLECULAR RADICAL CYCLISATIONS
Hutchinson, John H.,Daynard, Tim S.,Gillard, John W.
, p. 573 - 576 (2007/10/02)
Intramolecular radical cyclisation reactions of substrates possessing a silaketal tether proceed predominantly via an endo mode in moderate to good yield to give 7, 8 or 9 membered ring products.The products, which are protected diols, can then be deprote
General Synthesis of 1-Oxaspirodecan-2-ones and 1-Oxaspirodecanes from 5-Methylene-2(5H)-furanone
Alonso, Daniel,Font, Josep,Ortuno, Rosa M.
, p. 5567 - 5572 (2007/10/02)
5-Methylene-2(5H)-furanone underwent Diels-Alder cycloadditions to butadiene and several acyclic and cyclic C-substituted dienes, respectively, affording bicyclic and tricyclic spiroadducts in good yields.These compounds are precursors of other unsaturated and saturated spirolactones and also spiroethers, which were obtained through simple chemical reactions, i.e., hydrogenation of C-C double bonds, reduction of the carbonyl group, and Michael addition.The synthesis of 32 spirolactones and eight spiroethers illustrates the scope and efficiency of this method.Many of these products are suitable for use as components of perfumes and aromas owing to their olfactive properties.
BORON ANNULATION IN ORGANIC SYNTHESIS. 4. SILICON EFFECTS WITH TETRASUBSTITUTED OLEFINS
Akers, James A.,Bryson, Thomas A.
, p. 2187 - 2190 (2007/10/02)
Selectivity for hydroboration and boron decalone annulation employing tetrasubstituted olefins is strongly influenced by allylic silicon.
