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Thia-Michael Addition Reactions (thia-michael + addition_reaction)

Distribution by Scientific Domains
Chemistry100%

Selected Abstracts

Pronounced Catalytic Effect of a Micellar Solution of Sodium Dodecyl Sulfate (SDS) on the Efficient C-S Bond Formation via an Odorless Thia-Michael Addition Reaction through the in situ Generation of S -Alkylisothiouronium Salts

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 5 2009
Habib Firouzabadi
Abstract A pronounced catalytic effect of sodium dodecyl sulfate (SDS) was observed on the in situ production of S -alkylisothiouronium salts via the reaction of primary, allyl and benzyl halides with thiourea in SDS droplets .Hydrolysis of the generated S -alkylisothiouronium salts in the palisade layer of the droplets produces the corresponding thiol moieties which are immediately added to the electron-deficient olefins that are present in the micellar core to produce the thia-Michael adducts. The entire route is an almost odorless process. The yields of the products are good to excellent and the method is applicable to large-scale operation without any problem. [source]

ChemInform Abstract: A Facile Generation of C,S Bonds via One-Pot, Odorless and Efficient Thia-Michael Addition Reactions Using Alkyl, Aryl or Allyl Halides, Thiourea and Electron-Deficient Alkenes in Wet Polyethylene Glycol (PEG 200) under Mild Reaction Conditions.

CHEMINFORM, Issue 44 2009
Habib Firouzabadi
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

Thia-Michael Addition Reactions in Water Using 3-[Bis(alkylthio)methylene]pentane-2,4-diones as Odorless and Efficient Thiol Equivalents.

CHEMINFORM, Issue 52 2007
Yanyan Chai
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Thia-Michael Addition Reactions Using 2-[Bis(alkylthio)methylene]-3-oxo-N-o-tolylbutanamides as Odorless and Efficient Thiol Equivalents.

CHEMINFORM, Issue 22 2006
Dewen Dong
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

Solvent-free Thia-Michael Addition Reactions Using 3-[Bis(alkylthio)methylene]pentane-2,4-diones as Efficient and Odorless Thiol Equivalents

CHINESE JOURNAL OF CHEMISTRY, Issue 8 2008
Chun LIN
Abstract 3-[Bis(alkylthio)methylene]pentane-2,4-diones (1a and 1b) have been investigated as nonthiolic and odorless thiol equivalents for thia-Michael addition reactions under solvent-free conditions. Promoted by HCl (aq.), the cleavage of compounds 1 took place, and the in-situ generated thiols underwent facile conjugate addition to ,?, -unsaturated carbonyl compounds 2 affording the corresponding ????????-keto sulfides 3 in high yields. [source]