Cyclopropyl Grignard reagents react with carbonyl compounds in the presence of diethyl phosphite to give homoallylicbromides. The reaction is effectively carried out under mild conditions in a one-pot fashion with moderate to good yields.
Manganese catalyzed chemo-selective synthesis of acyl cyclopentenes: a combined experimental and computational investigation
作者:Koushik Sarkar、Prativa Behera、Lisa Roy、Biplab Maji
DOI:10.1039/d4sc02842b
日期:——
radical-initiated ring expansion rearrangement of the in situ formed vinyl cyclopropenone intermediate. The reaction, catalyzed by an earth-abundant metal complex, occurs under milder conditions, generating water and hydrogen gas as byproducts. Rigorous control experiments and detailed computational studies were conducted to unravel the underlying mechanism. The observed selectivity is explained by entropy-driven