61224-82-6

Upstream product

• 78-94-4 methyl vinyl ketone 
• 75-08-1 ethanethiol 
• 590-90-9 1-Hydroxy-3-butanone 
• 28509-46-8 bromomethyl acetone 
• 50-00-0 formaldehyd 
• 67-64-1 acetone 
• 811-51-8 sodium thioethylate 
• 1071-37-0 2-ethylisothiourea hydrobromide 
• 3588-30-5 2-methoxy-1,3-butadiene 

Relevant academic research and scientific papers

Fluoroboric acid adsorbed on silica-gel (HBF4-SiO2) as a new, highly efficient and reusable heterogeneous catalyst for thia-Michael addition to α,β-unsaturated carbonyl compounds

Fluoroboric acid adsorbed on silica-gel (HBF4-SiO2) has been found to be a new and highly efficient heterogeneous catalyst for thia-Michael addition to α,β-unsaturated carbonyl compounds under solvent-free conditions. In the case of

Thia-Michael addition using cheap and odorless S-alkylisothiouronium salts as thiol equivalents in water

S-Alkylisothiouronium salt has been found to be a non-toxic, odorless and simply operational alternative of thiol for the thia-Michael addition with electron-deficient olefins. The reactions were carried out under alkaline conditions in water at room temperature within 5-20 minutes to afford the expected products in good to excellent yields. Georg Thieme Verlag Stuttgart.

Amino acid catalyzed thio-Michael addition reactions

Using amino acid as a catalyst, an inexpensive, nontoxic, environmentally friendly, metal-free reaction procedure for C-S bond formation via thio-Michael addition reaction has been developed. The thio-Michael addition products were obtained in excellent yields under mild and neutral conditions. This metal-free catalytic protocol was found to be a good alternative to the existing metal catalyst methodology for the thio-Michael addition reaction.

Scope and limitations of HClO4-SiO2 as an extremely efficient, inexpensive, and reusable catalyst for chemoselective carbon-sulfur bond formation

The scope and limitations of perchloric acid adsorbed on silica gel (HClO4-SiO2) as a highly efficient, inexpensive, and reusable catalyst for chemoselective carbon-sulfur bond formation by conjugate addition of thiols to α,β-unsatur

Catalyst-free conjugated addition of thiols to α,β-unsaturated carbonyl compounds in water

Catalyst-free conjugate addition of thiols to α,β-unsaturated carbonyl compounds in water is reported. β-Sulfido carbonyl compounds were formed at room temperature, in short times and with excellent chemoselectivity. Competitive dithiane/dithiolane format

Copper(II) tetrafluoroborate as a novel and highly efficient catalyst for Michael addition of mercaptans to α,β-unsaturated carbonyl compounds

Copper(II) tetrafluoroborate has been found to be a new and highly efficient catalyst for Michael addition of thiols to α,β-unsaturated carbonyl compounds under solvent-free conditions and in H2O at room temperature. The reactions are very fast

Zinc perchlorate hexahydrate catalysed conjugate addition of thiols to α,β-unsaturated ketones

Zn(II) perchlorate hexahydrate has been found to be a new and efficient catalyst for conjugate addition of thiols to α,β-unsaturated ketones under solvent-free conditions at room temperature. The reaction of aryl, arylalkyl and alkyl thiols with cyclic an

7-oxo-pyridopyrimidines (II)

The present invention provides compounds of the formula: a prodrug or a pharmaceutically acceptable salt thereof, wherein R1, R2, R3 and Ar1 are those defined herein, and methods for preparation and uses thereof

A new method for the preparation of Michael adducts and cyclic enones using lithium chloride-hexamethylphosphoramide system

A new procedure using lithium chloride in hexamethylphosphoramide was found to be useful for the synthesis of Michael-type adducts and cyclic enones. Selectivity for the two products could be controlled by altering the reaction temperature employed. The urea-type solvents were also examined instead of hexamethylphosphoramide.

SYNTHESIS OF MONO(ALKYLTHIO)-SUBSTITUTED KETONES

In the reaction of 2-propanone in the presence of sodium bicarbonate with a mixture of formaldehyde and the corresponding alkaline hydrolyzates of S-alkylthiuronium salts (thioalcoholates) β-keto sulfides (1-alkylthio-3-butanones) were obtained.Ketalization of the products with glycerol gave the cyclic derivatives alkylthio-1,3-dioxolanes.