Novel (3 + 2) photocycloadditions with 3-(1-alkynyl)cyclohexenones and tetramethylethylene
作者:Paul Margaretha、H. J. Rathjen、Steven Wolff、William C. Agosta
DOI:10.1039/c39880000841
日期:——
Irradiation of 3-alkynylcyclohexenones (3) with tetramethylethylene gives rise to novel (3 + 2) cycloadducts that can be explained mechanistically in terms of closure of an initial biradical (6) to a vinyl carbene (7), followed by stabilization of the carbene.