Results Products. Irradiation of a methylene chloride solution of adamantane (Ia) and excess biacetyl in a Pyrex vessel with a high-pressure 100-W mercury lamp gave 1- acetyladamantane (IIa) regiospecifically, in 92% preparative yield based on the consumed adamantane, and the coupling product of acetoin radical (111) was also formed in approximately equimolar amount to 1Ia. l” The structure of IIa was determined on the basis ...
