Concerted vs Stepwise Mechanisms in Dehydro-Diels–Alder Reactions
作者:Aida Ajaz、Alexander Z. Bradley、Richard C. Burrell、William Hoi Hong Li、Kimberly J. Daoust、Laura Boddington Bovee、Kenneth J. DiRico、Richard P. Johnson
DOI:10.1021/jo201567d
日期:2011.11.18
The Diels–Alderreaction is not limited to 1,3-dienes. Many cycloadditions of enynes and a smaller number of examples with 1,3-diynes have been reported. These “dehydro”-Diels–Alder cycloadditions are one class of dehydropericyclic reactions which have long been used to generate strained cyclic allenes and other novel structures. CCSD(T)//M05-2X computational results are reported for the cycloadditions