4440-90-8

Usage

Chemical Properties

Colorless liquid

InChI:InChI=1/C4H8O3S/c1-3-4(2)7-8(5)6-3/h3-4H,1-2H3

Upstream product

• 513-85-9 2.3-butanediol 
• 616-42-2 dimethylsulfite 
• 1029272-42-1 (2R,3S)-2,3-butanediol 
• 6982-25-8 d,l-2,3-butanediol 
• 21490-63-1 2,3-trans-epoxybutane 
• 925669-95-0 2,3-cis-epoxybutane 

Downstream Products

• 4440-89-5 4,5-dimethylethylene (trans,trans) sulphate 
• 106-99-0 buta-1,3-diene 
• 1758-32-3 2,3-epoxybutane 
• 78-93-3 butanone 

Relevant academic research and scientific papers

A novel preparation of cyclic sulfites through photosulfoxidation of alkenes

The cyclic sulfite, 4-ethyl-5-methyl-1,3,2-dioxathiolane 2-oxide, has been prepared by the photosulfoxidation of trans-2-pentene, and the quantum yield for the reaction has been determined. The proposed mechanism involves the reaction of a charge transfer complex formed between sulfur dioxide and the alkene, and is consistent with the participation of the triplet state of the former.

Synthetic method for ethylene sulfite derivative

The invention relates to a synthetic method for an ethylene sulfite derivative, and belongs to the field of fine chemical synthesis. The synthetic method comprises the following steps: with titanate as a catalyst, carrying out ester exchange on dimethyl sulfite and corresponding glycol to synthesize the target compound, wherein the using amount of the catalyst is 0.01% to 2% of total weight of reactants, and the mole ratio of the used glycol to the used dimethyl sulfite is 1 to 1.2; reacting at the temperature of 80 to 150 DEG C, gradually carrying out fractionation to remove generated methylalcohol, and stopping the reaction when the methyl alcohol is not fractionated any longer; and carrying out vacuum distillation on the reaction product, and collecting the target substance. The methodhas the advantages of no corrosion, high raw material conversion rate, high yield and the like.

Aluminum-Catalyzed Formation of Functional 1,3,2-Dioxathiolane 2-Oxides from Sulfur Dioxide: An Easy Entry towards N-Substituted Aziridines

Aluminum(III) complexes derived from aminotriphenolate ligands are shown to be excellent catalysts for the formation of cyclic sulfites from a range of (functionalized) terminal and internal epoxides, and ex situ generated sulfur dioxide. The developed catalytic protocol is characterized by its operational simplicity, wide scope in epoxide reaction partners, good to excellent isolated yields and mild reaction conditions [50–70 °C, p(SO2) a three-step protocol. (Figure presented.).

Process for Preparing Optically Active Diphosphanes

The present invention relates to a process for preparing optically active bisphosphinylalkanes from the correspondingly substituted, racemic 1,2-diols. The optically active bisphosphinylalkanes which can be obtained in this way are suitable as ligands for preparing chiral transition metal catalysts.