What is bu3snh?

Organotin hydrides are very good radical reducing agents due to the relatively weak, nonionic bond between tin and hydrogen (Bu3SnH 74 kcal/mol) that can cleave homolytically. Tributyltin hydride.

What is the purpose of AIBN in radical reactions?

AIBN breaks down and forms a molecule of nitrogen gas and two carbon radicals. The nitrile functional groups serve a very important purpose in that they help to stabilize the carbon-centered radicals that were formed.

What is ph3snh?

Although Ph3SnH is treated as a source of “H·”, in fact it does not release free hydrogen atoms, which are extremely reactive species. Instead, Ph3SnH transfers H to substrates usually via a radical chain mechanism. This reactivity exploits the relatively good stability of “Ph3Sn·”

What is THF reagent?

THF (Tetrahydrofuran) is a stable compound with relatively low boiling point and excellent solvency. It is widely-used for dissolution and reaction of various substances. Also it is used as a starting material for the synthesis of poly(tetramethylene ether) glycol (PTMG), etc.

What is TPH in organic chemistry?

Total petroleum hydrocarbons (TPH) is a term used for any mixture of hydrocarbons that are found in crude oil. Chemicals that occur in TPH include hexane, benzene, toluene, xylenes, naphthalene, and fluorene, other constituents of gasoline, of jet fuels, of mineral oils, and of other petroleum products.

What is zinc amalgam?

Zinc amalgam It is the reducing agent in the Jones reductor, used in analytical chemistry. Formerly the zinc plates of dry batteries were amalgamated with a small amount of mercury to prevent deterioration in storage. It is a binary solution (liquid-solid) of mercury and zinc.

What is the chemical name of AIBN?

Azobisisobutyronitrile. Azobisisobutyronitrile (abbreviated AIBN) is an organic compound with the formula [(CH 3) 2 C(CN)] 2 N 2. This white powder is soluble in alcohols and common organic solvents but is insoluble in water. It is often used as a foamer in plastics and rubber and as a radical initiator.

What is the mechanism of action of AIBN?

Mechanism. In its most characteristic reaction, AIBN decomposes, eliminating a molecule of nitrogen gas to form two 2-cyanoprop-2-yl radicals: These radicals can initiate free-radical polymerizations and other radical-induced reactions. For instance, a mixture of styrene and maleic anhydride in toluene will react if heated,…

What is the reaction between AIBN and nitrogen gas?

In its most characteristic reaction, AIBN decomposes, eliminating a molecule of nitrogen gas to form two 2-cyanoprop-2-yl radicals: Because azobisisobutyronitrile readily gives off free radicals, it is often used as a radical initiator.

Is AIBN a radical initiator?

AIBN can also be produced by the reaction shown below. AIBN is safer to use than benzoyl peroxide (another radical initiator) because the risk of explosion is far less. However, it is still considered as an explosive compound, decomposing above 65 °C.