89654-30-8Relevant academic research and scientific papers
Synthesis of substituted tetrahydrofurans via intermolecular reactions of γ-chlorocarbanions of 3-substituted 3-chloro-propylphenyl sulfones with aldehydes
Brandt, Agnieszka,Wojtasiewicz, Anna,?niezek, Marcin,Makosza, Mieczys?aw
experimental part, p. 3378 - 3385 (2010/06/20)
Carbanions of 3-substituted-3-chloropropyl phenyl sulfones add to carbonyl groups of aldehydes to produce aldol type adducts that undergo 1,5-intramolecular substitution giving 2,3,5-trisubstituted tetrahydrofurans. The effect of substituents in the 3-pos
Easy access to trans-2,3-disubstituted cyclobutanones, 2,4,5-trisubstituted 3,6-dihydro-2H-pyrans and cis-substituted phenylcyclopropylsulfones by using the highly versatile 1-phenylsulfenyl- or 1-phenylsulfonyl-cyclopropylketones
Alberti, Guido,Bernard, Angela M.,Floris, Costantino,Frongia, Angelo,Piras, Pier P.,Secci, Francesco,Spiga, Marco
scheme or table, p. 3512 - 3519 (2010/01/05)
The high versatility of 1-phenylsulfenyl- or 1-phenylsulfonyl- cyclopropylketones has been exploited for the regioselective synthesis of trans-2,3-disubstituted cyclobutanones, 2,4,5-trisubstituted 3,6-dihydro-2H-pyrans and cis-2-alkyl- or cis-2-aryl-cycl
Improved dimethylsulfoxonium methylide cyclopropanation procedures, including a tandem oxidation variant
Paxton, Richard J.,Taylor, Richard J. K.
, p. 633 - 637 (2007/10/03)
A new procedure for the cyclopropanation of α,β-unsaturated carbonyl compounds and related systems is described which employs trimethylsulfoxonium iodide and an organic base in acetonitile to generate dimethylsulfoxonium methylide in situ; in addition, pr
Reactivity of bifunctional olefins with hydrazine hydrate - Part II
Bhaskar Reddy,Rajagopal Sarma,Somasekhar Reddy,Subba Reddy
, p. 901 - 903 (2007/10/03)
The reaction of 1-aroyl-2-arylsulfonylethenes 1 with different ratios of hydrazine hydrate lead to hydrazones, dimerized products and 2-pyrazolines. The reactivity of pyrazolines has also been studied by dehydrogenation, pyrolysis, nitrosation and acylation.
Phase transfer catalyzed cyclopropanation of trans-styryl aryl sulfones with dimethyl sulfoxonium methylide
Padmaja,Ramachandra Reddy,Subba Reddy,Bhaskar Reddy
, p. 91 - 98 (2007/10/03)
Some new trans-aryl cyclopropyl sulfones (II) have been prepared by the cycloaddition of dimethylsulfoxonium methylide to trans-styryl aryl sulfones (I) by two different methods. It is observed that the reaction in presence of a phase transfer catalyst proceeds in a facile manner.
Novel Synthesis of Cyclopropylaminosulfoxonium Salts from (Dimethylamino)phenylsulfoxonium Methylide
Okuma, Kentaro,Sato, Yasunari,Ishii, Toshiro,Ohta, Hiroshi
, p. 2390 - 2392 (2007/10/02)
The reactions of (dimethylamino)phenylsulfoxonium methylide with aldehydes gave unusual cyclopropylaminosulfoxonium salts in good yields when 1,8-diazabicycloundec-7-ene (DBU) was used as a base.This ylide reacted with aldehydes to give the corresponding betaines, which resulted in the formation of vinylsulfoxonium salts.The additional ylide reacted with these salts to afford cyclopropylsulfoxonium salts.
Convenient One-pot Synthesis of Cyclopropyl Sulfones via Successive Alkylation and Cyclization of Sulfone-stabilized Carbanions
Tanaka, Kazuhiko,Suzuki, Hitomi
, p. 2071 - 2074 (2007/10/02)
A general one-pot approach to cyclopropyl sulfones has been demonstrated, which involves the alkylation of lithiomethyl phenyl sulfone with an epoxide followed by cyclization of the resulting carbanion.Alkylation of the dianion derived from 3-arylsulfonyl
NOVEL REACTIONS OF AMINOSULFOXONIUM YLIDE WITH EPOXIDES
Okuma, Kentaro,Nishimura, Kenshin,Ohta, Hiroshi
, p. 93 - 96 (2007/10/02)
Reactions of (dimethylamino)phenyloxosulfonium methylide with epoxides were carried out.When aromatic epoxides were used as substrates, cyclopropyl sulfones and oxetanes were obtained.When aliphatic epoxides were used, the products were only the cycloprop
