Df. Harvey et Em. Grenzer, ON THE REACTION OF A DIOXENYLMOLYBDENUM CARBENE COMPLEX WITH ENYNES -STUDIES OF THE INTRAMOLECULAR DIELS-ALDER REACTION, Journal of organic chemistry, 61(1), 1996, pp. 159-165
Dioxenylmolybdenum carbene complex 1 has been found to readily react w
ith enynes to form tetracyclic products. The tetracyclic products of t
his reaction appear to be generated via intramolecular [4 + 2] cycload
dition of an initially formed trialkoxycyclopentadiene derivative. Stu
dies which help to define the generality of this reaction are reported
, and the involvement of the metal in the cyclization process is discu
ssed.