Key points are not available for this paper at this time.
Stepwise palladium-catalyzed cross-coupling between terminal alkynes and vinyl triflates afforded the first cross-conjugated enyne macrocycles constructed of 3-alkylidene-1-propynyl −C≡C−C(=CR2)− building blocks, namely, the expanded radialene 1 and the hybrid radialene 2.
Eisler et al. (Mon,) studied this question.