Search results
Results From The WOW.Com Content Network
Such reactions rely on the easy displacement of the chloride with nucleophiles such as amines: (ClCN) 3 + 2 RNH 2 → (RNHCN)(ClCN) 2 + RNH 3 + Cl −. Other triazine herbicides, such as simazine, anilazine and cyromazine are made in an analogous way. [3] Cyanuric chloride is also used as a precursor to dyes and crosslinking agents.
Simazine may be prepared from cyanuric chloride and a concentrated solution of ethyl amine (at least 50 percent by number) in water. [1] The reaction is highly exothermic and is therefore best carried out below 10 °C.
Beckmann reaction. The reaction mechanism for this reaction is based on a catalytic cycle with cyanuric chloride activating the hydroxyl group via a nucleophilic aromatic substitution. The reaction product is dislodged and replaced by new reactant via an intermediate Meisenheimer complex. Beckmann cyanuric acid cataly cycle
With amines, one or more chloride is displaced. The remaining chlorides are reactive, and this theme is the basis of the large field of reactive dyes. Cyanuric chloride assists in the amidation of carboxylic acids. [3] The 1,2,4-triazines can react with electron-rich dienophiles in an inverse electron demand Diels-Alder reaction. This forms a ...
When using oxalyl chloride as the dehydration agent, the reaction must be kept colder than −60 °C to avoid side reactions. With cyanuric chloride [11] or trifluoroacetic anhydride [12] instead of oxalyl chloride, the reaction can be warmed to −30 °C without side reactions.
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
In oxychlorination, hydrogen chloride instead of the more expensive chlorine is used for the same purpose: CH 2 =CH 2 + 2 HCl + 1 ⁄ 2 O 2 → ClCH 2 CH 2 Cl + H 2 O. Secondary and tertiary alcohols react with hydrogen chloride to give the corresponding chlorides. In the laboratory, the related reaction involving zinc chloride in concentrated ...
The name "Schotten–Baumann reaction conditions" often indicate the use of a two-phase solvent system, consisting of water and an organic solvent. The base within the water phase neutralizes the acid, generated in the reaction, while the starting materials and product remain in the organic phase, often dichloromethane or diethyl ether .