131575-72-9

Upstream product

• 40288-65-1 1-(benzo[1,3]dioxol-5-yl)-2-bromoethanone 
• 873-55-2 sodium benzenesulfonate 
• 2297-65-6 benzenesulfonyl bromide 
• 92449-54-2 5-(2,2-dibromovinyl)-1,3-benzodioxol 
• 131575-70-7 1-bromo-1-(3,4-methylenedioxyphenyl)-2-phenylsulphonylethene 
• 120-57-0 piperonal 
• 57134-53-9 3,4-methylenedioxyphenylethyne 

Downstream Products

• 131575-78-5 (4R,αS)-4-(α-hydroxybenzyl)-2-(3,4-methylenedioxyphenyl)-3-phenylsulphonyl-4,5-dihydrofuran 
• 131575-76-3 5-[(E)-2-Benzenesulfonyl-1-((2S,3R)-3-phenyl-oxiranylmethoxy)-vinyl]-benzo[1,3]dioxole 
• 131575-75-2 5-[(Z)-2-Benzenesulfonyl-2-((2S,3R)-3-phenyl-oxiranylmethoxy)-vinyl]-benzo[1,3]dioxole 

Relevant academic research and scientific papers

Mukaiyama reagent-promoted metal-free preparation of alkynyl sulfones and phosphonates under mild conditions

An efficient and mild route for the formation sulfur or phosphor-substituted alkynes was herein demonstrated. The Mukaiyama reagent-mediated transformation started from easily-accessible substrates without carbon-carbon triple bonds, and the reaction proceeded under mild conditions (room temperature) in a one-pot manner, requiring for no transition metal-catalysts. The practical protocol featured for good functional groups tolerance (up to 41 examples) and high efficiency (up to 91% yields) towards alkynyl sulfones and alkynyl phosphonates at low cost.

Synthesizing method of acetyleic sulfone

The invention provides a synthesizing method of acetyleic sulfone. The synthesizing method comprises the following steps of mixing a primer which is shown in the description, 2-chloro-1-methylpyridinium iodide, an alkaline substance and an organic solvent

Approaches to 2,6-Diaryl-3,7-DioxabicycloOctane Lignans via Asymmetric Synthesis of Dihydro- and Tetrahydro-furan Derivatives

Cyclisation of chiral non-racemic phenylsulphonylvinyl epoxy ethers, produced using the Sharpless epoxidation reaction, has been used to prepare a series of enantiomerically enriched 2-aryl-4-(α-hydroxybenzyl)-4,5-dihydrofuran derivatives.Reduction of these compounds using triethylsilane and BF3-diethyl ether gave the corresponding tetrahydrofuran derivatives stereoselectively.Attempts to convert either the dihydro- or tetrahydro-furan derivatives into lignans belonging to the 2,6-diaryl-3,7-dioxabicyclooctane series so far proved unsuccessful.