56637-45-7

Basic information

• Product Name: 2-methyl-2-(4-methylphenyl)-1,3-dithiane
• Synonyms: 1,3-dithiane, 2-methyl-2-(4-methylphenyl)-; 2-Methyl-2-(4-methylphenyl)-1,3-dithian
• CAS NO: 56637-45-7
• Molecular Formula: C₁₂H₁₆S₂
• Molecular Weight: 224.3854
• Mol File: 56637-45-7.mol
• Article Data: 11

Chemical Properties

• Boiling Point: 344°C at 760 mmHg
• Flash Point: 163.2°C
• Density: 1.098g/cm³
• Vapor Pressure: 0.000135mmHg at 25°C
• Refractive Index: 1.586
• CAS DataBase Reference: 2-methyl-2-(4-methylphenyl)-1,3-dithiane(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methyl-2-(4-methylphenyl)-1,3-dithiane(56637-45-7)
• EPA Substance Registry System: 2-methyl-2-(4-methylphenyl)-1,3-dithiane(56637-45-7)

Safety Data

• Hazardous Substances Data: 56637-45-7(Hazardous Substances Data)

Upstream product

• 109-80-8 1.3-propanedithiol 
• 122-00-9 para-methylacetophenone 
• 2089-33-0 4-methylacethophenone oxime 
• 57529-04-1 2-chloro-1,3-dithiane 
• 766-97-2 4-n-methylphenylacetylene 
• 6135-56-4 2-(p-tolyl)-2-methyl-1,3-dioxolane 

Downstream Products

• 139214-35-0 trimethyl(2-(4-methylphenyl)allyl)silane 
• 139214-40-7 Trimethyl-((E)-2-p-tolyl-propenyl)-silane 
• 41159-08-4 2-methyl-2-(4-methylphenyl)-2-methyl-1,3-dithiolane 
• 289031-43-2 2-p-tolyl-[1,4]dithiepane 
• 289031-45-4 2-p-tolyl-6,7-dihydro-5H-[1,4]dithiepine 
• 122-00-9 para-methylacetophenone 

Relevant articles and documents

Mild Deprotection of Dithioacetals by TMSCl/NaI Association in CH3CN

A mild process using a combination of TMSCl and NaI in acetonitrile is used to regenerate carbonyl compounds from a variety of dithiane and dithiolane derivatives. This easy to handle and inexpensive protocol is also efficient to deprotect oxygenated and mixed acetals as 1,3-dioxanes, 1,3-dioxolanes and 1,3-oxathianes quantitatively. As a possible extension of this method, it was also shown that nitrogenated substrates such as hydrazones, N-tosylhydrazones, and ketimines reacted well under these conditions to give the expected ketones in high yields. The methodology proposed herein is a good alternative to the existing methods since it does not use metals, oxidants, reducing agents, acidic or basic media, and keto-products were obtained in high to excellent yields.

A substituted -1,3-dithiane-preparation method of compound

The invention discloses a method for preparing substituted-1,3-dithiane compounds. The method comprises the following steps: 1. with 1,2-dichloroethane or dichloromethane as a solvent, stirring to react 2-chlor-1,3-dithiane with alkynes with a general formula I for 1-24 hours at a temperature condition of 45-80 DEG C in the presence of an acid medium and alcoholic compounds; 2. removing the solvent in the reaction system by rotary evaporation after the reaction, and separating and purifying the residues by column chromatography to obtain substituted-1,3-dithiane compounds with a general formula II. According to the method disclosed by the invention, the 2-chlor-1,3-dithiane directly reacts with different types of alkynes, thereby not only avoiding the defects of foul smell, strong volatility and toxicity when 1,3-propanedithiol is used, but also being safe in operation and environmental friendly, and the method has the advantages of mild reaction conditions, simple operation, high yield, etc.

Efficient method for thioacetalization of carbonyl compounds in the presence of a catalytic amount of benzyltriphenylphosphonium tribromide (BTPTB) under solvent-free conditions

A variety of carbonyl compounds have been successfully converted to the corresponding thioacetal derivatives in good to excellent yields on reaction of carbonyl compounds with 1,2-ethanedithiole, 1,3-propanedithiol, and ethylthiol in the presence of a cat