5399-58-6

Usage

Uses

Used in Coatings Industry:
2-Propanesulfonic Acid Sodium Salt is used as an emulsifier for the preparation of water-based self-matting acrylate-modified polyurethane resin. This application takes advantage of its emulsifying properties to create a stable, high-quality coating with improved performance characteristics.

InChI:InChI=1/C3H8O3S/c1-3(2)7(4,5)6/h3H,1-2H3,(H,4,5,6)/p-1

Upstream product

• 75-26-3 isopropyl bromide 
• 75-29-6 isopropyl chloride 
• 10147-37-2 Isopropylsulfonyl chloride 

Downstream Products

• 10147-37-2 Isopropylsulfonyl chloride 

Relevant academic research and scientific papers

2-MORPHOLIN-4,6-DISUBSTITUTED PYRIMIDINE DERIVATIVE, AND PREPARATION METHOD AND PHARMACEUTICAL USE THEREOF

Disclosed is a 2-morpholin-4,6-disubstituted pyrimidine derivative as shown in formula (I) below, and a pharmaceutically acceptable salt, solvate, stereoisomer or prodrug thereof, and a pharmaceutical composition thereof and a use thereof, wherein the definition of each group is as shown in the description. The compound has a PI3K kinase inhibition activity, and has a relatively high inhibitive ability and a low cytotoxicity against PIK3CA mutant breast cancer cell strains T47D and MCF-7.

Mechanisms of hydrolysis and related nucleophilic displacement reactions of alkanesulfonyl chlorides: pH dependence and the mechanism of hydration of sulfenes

pH-rate profiles, primary kinetic isotope effects, deuterium substitution patterns, and pH-product ratios in the presence of added nucleophiles provide evidence for the following overlapping set of mechanisms for the hydrolysis of methanesulfonyl chloride (1) (in 0.1 M KCl at 25 °C): (a) pH ≤ 1-6.7, reaction with water by direct nucleophilic attack on the sulfonyl chloride; (b) pH ≥ 6.7-11.8, rate-determining attack by hydroxide anion to form sulfene (2), which is then trapped by water in a fast step; and (c) pH ≥ 11.8, sulfene formation and sulfene trapping by hydroxide anion; careful inspection showed no sign of sulfene formation in the reaction with water or of direct displacement by hydroxide anion. This pattern, with appropriate variations in the values of pHi (the pH at which two competing mechanisms have the same rate), is apparently general for simple alkanesulfonyl chlorides having at least one hydrogen on the carbon bearing the sulfonyl group. Azide and acetate anions react with 1 below pHi for 1 (6.7) by direct nucleophilic substitution at the sulfur, but above pHi by trapping of the sulfene. 2-Chlorophenoxide anion reacts with 1 below pH 6.7 by both (a) direct displacement to form the ester and (b) elimination to form the sulfene. Above pH 6.7, sulfene is formed from the sulfonyl chloride by reaction with either 2-chlorophenoxide or hydroxide ion; this is followed by trapping of the sulfene with 2-chlorophenoxide, water, or hydroxide. The possibility of the 2-chlorophenoxide anion acting as a general base promoting the reaction of water with either 1 and 2 was examined, but no sign of either process was detected.

Studies on Sulphochlorination of Paraffins. VIII. Studies on the Hydrolysis of Individual Alkane Sulphochlorides by Sodium Hydroxide

The hydrolysis of individual C1-C5 alkane sulphochlorides by sodium hydroxide in dioxane/water (1:1) was kinetically studied at 25 deg C by means of stopped-flow technique, measuring the change of electric conductivity.The rate constants were influenced by steric hindrance, but in all cases were higher than the rate constant for alkaline hydrolysis of benzene sulphochloride, which cannot react according to the elimination-addition (sulphene) mechanism.The reaction enthalpy of the alkaline hydrolysis of four individual alkane sulphochlorides was determined by a simple calorimetric apparatus; the average value amounts to ΔRH = -239 kJ mol-1.