Acceleration of the orthoester Claisen rearrangement by clay catalyzed microwave thermolysis: expeditious route to bicyclic lactones
作者:Robert S. Huber、Graham B. Jones
DOI:10.1021/jo00047a041
日期:1992.10
The claisen rearrangement in synthesis: acceleration of the johnson orthoester protocol en route to bicyclic lactones
作者:Graham B. Jones、Robert S. Huber、Sotheary Chau
DOI:10.1016/s0040-4020(01)80306-9
日期:1993.1
Catalysis of the Claisenorthoesterrearrangement of triethyl orthoacetate and a number of 2-cycloalken-1-ols has been achieved using acidic catalysis and brief microwavethermolysis in DMF. Unlike conventional methods of thermolysis, very high yields of rearranged products are typically obtained in less than ten minutes, and the Claisen products themselves require no further purification. The synthetic