Photolyse von aliphatischen Säurechloriden in Diäthyläther

摘要

On photolysis of acetyl chloride (wave length 254 nm) in ethereal solution the main product is 3-ethoxy-2-butanone (1). The by-products are 2.3-diethoxy-butane (3), butane-2.3-dione, ethyl acetate and 3-acetoxy-2-butanone.1is formed by the substitution of ether by the radical pair (CH3CO·· Cl) within the solvent cage. Diffusion of the radical pair from the cage causes H-abstraction from the ether forming the α-ether radical2. The letter combines to3. The ratio of1to3depends on temperatu