Interconversion of bicyclo[2.2.1]hept-2-yne and 5-bicyclo[2.1.1]hexylidenecarbene.
This work provides unambiguous results for the full equilibration of cycloalkyne 2 with its isomeric ring-contracted vinylidene 3 prior to their reaction with 2,3-dihydropyran (4), as evidenced by the products formed when 2 and 3 are produced directly from their precursors having bicyclo[2.2.1]heptyl and bicyclo[2.1.1]hexyl skeletons, respectively.
Gilbert
John C
JC
Department of Chemistry and Biochemistry, University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712, USA. jgilbert@mail.utexas.edu
Yin
Jiandong
J