Question

Choose and describe an organic reaction which interests you (different than Week 1's). Your choice should be different from that of other students. Indicate the reactants, products, mechanisms, conditions, and typical yield, as well as a chemical equation. Attach a drawing showing the structures of all reactants and products. Respond to two or more other students to add information, ask a question, or provide a different perspective.

PLEASE TYPE OR WRITE BIG/ NEAT!

thank you!

Answer 1

Norrish type 1 reaction is one of my intresting reaction .

In this reaction, The light‐initiated carbon‐carbon bond cleavage between the α‐carbon and the carbonyl of a ketone or an aldehyde to form an alkyl and an acyl radical pairs, from which a variety of products can be formed, such as alkane, alkene, cyclic acetal, decarbonyl compound, and oxetane and this reaction is referred to as the Norrish type I reaction. This reaction is initiated by a n‐π* excitation followed by an α‐cleavage to form an acyl and an alkyl radical pairs.

Examples,conditions and mechanism are given below in the image.

The condition is light condition.

In the first mechanism, the acyl radical eliminates CO and the two alkane radicals combines to form higher alkane.

In the second mechanism the acyl radical forms ketene and alkane radical forms alkane by the abstraction of hydrogen radical from acyl radical.

In the third mechanism the alkane radical forms alkane and the acyl radical forms aldehyde.

The first product, which is formed from first mechanism has higher yield than other products.