1603829-55-5

Upstream product

• 505-23-7 1,3 dithiane 
• 100-42-5 styrene 

Downstream Products

• 53178-47-5 2-(2-hydroxy-2-phenylethyl)-1,3-dithiane 

Relevant academic research and scientific papers

Platinum complex resistant to sulfur poisoning and applications thereof

The invention discloses a platinum complex resistant to sulfur poisoning and applications thereof. The platinum complex has a complexing symmetric structure, which comprises a 1,3-dithiane benzene containing derivative group and symmetric unsaturated epithio-silane; wherein the 1,3-dithiane benzene containing derivative group comprises a benzene ring and a symmetric epithio- six-membered ring. ThePt catalyst has a highly symmetrical complexing structure and a very good effect on resisting sulfur poisoning. The catalytic activity is 92% or more. The catalytic effect in a sulfur system is basically the same as that in a non-sulfur system. The Pt catalyst has a good performing on resisting sulfur poisoning, is very stable at a room temperature, and can be stored for a long term. Solved are the problems that in the prior art, the storage time of a conventional Pt catalyst is short, the conventional Pt catalyst should be strictly sealed, and the catalytic activity of the Pt catalyst is lost after the Pt catalyst is poisoned by sulfur containing compounds. The Pt catalyst can be widely used in silicon-hydrogen addition reactions.

Preparation method of anti-sulfur poisoning platinum complex

The invention provides a preparation method of an anti-sulfur poisoning platinum complex. The preparation method comprises the following steps: preparing a 1,3-dithiane benzene containing derivative intermediate A, preparing an unsaturated symmetrical epithio-silane intermediate B, connecting the 1,3-dithiane benzene containing derivative intermediate A to Pt through a phase transfer substitutionbond, then firstly substituting and then chelating the unsaturated symmetrical epithio-silane intermediate B to Pt, and obtaining the anti-sulfur poisoning platinum complex. The preparation method issimple and convenient, the reaction condition is mild, the production efficiency is high, the cost is low, and the industrial production is realized. A prepared catalyst has a highly symmetric complexstructure, the anti-sulfur poisoning platinum complex is stable at the room temperature, can be stored for long and has an excellent anti-sulfur poisoning catalytic effect, the catalytic activity ismore than 92%, the curing degrees of a sulfur-containing system and a non-sulfur system are basically the same and both reach more than 90%, and the anti-sulfur poisoning platinum complex has an excellent anti-sulfur poisoning capability, and is widely applied to the hydrosilylation.

A β - chloro - 1, 3 - dithiane derivative of the preparation method

The invention relates to a preparation method of a beta-chloro-1,3-dithiane derivative. The preparation method comprises following steps: at the presence of a ferric salt catalyst, substituted styrene, 1,3-dithiane, and N-chlorosuccinimide are dissolved in a solvent, reaction is carried out for 6 to 24h at a temperature ranging from -30 DEG C to the room temperature; and the beta-chloro-1,3-dithiane derivative is obtained via separation and purification. The catalyst used in the preparation method is cheap and easily available; reaction conditions are mild; process is simple; and the beta-chloro-1,3-dithiane derivative can be obtained directly via one-pot reaction. The preparation method possesses significant application potential in medicament synthetic intermediate and natural product synthesis.

Iron-catalyzed radical oxidative coupling reaction of aryl olefins with 1,3-dithiane

An alternative method to an iron-catalyzed radical oxidative cross-coupling reaction followed by 2-chloro-1,3-dithiane and aryl olefins for the synthesis of β-chloro substituent 1,3-dithiane products is presented. The described method has the advantage of mildness of the reaction conditions and tolerates a variety of functional groups. Preliminary mechanistic studies have confirmed the first example of a coupling of 1,3-dithiane with unactivated alkenes that proceeds via an iron-catalyzed oxidative radical intermediate along the reaction pathway.