01121nas a2200157   4500008004100000022001400041245014000055210006900195260007100264300001000335490000700345520043900352100002200791700001900813856013100832       2013                        eng d  a1523-706000aPalladium-promoted [2+2+2] cocyclization of arynes and unsymmetrical conjugated dienes: synthesis of justicidin B and retrojusticidin B0 aPalladiumpromoted 222 cocyclization of arynes and unsymmetrical   a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJAN  a14-170 v153 a<p>A facile synthesis of natural and unnatural arylnaphthalenes has been demonstrated via the unprecedented palladium-promoted [2 + 2 + 2] cocyclization of arynes and unsymmetrical conjugated dienes using the N-heterocyclic carbene as a ligand. The unsymmetrical dienes used herein are actually alpha-coupled acrylate - cinnamate combinations bearing two beta-positive carbons and follow the key [2 + 2 + 2] cocyclization pathway.</p>1 aPatel, Ramesh, M.1 aArgade, N., P.  uhttps://library.ncl.res.in/content/palladium-promoted-222-cocyclization-arynes-and-unsymmetrical-conjugated-dienes-synthesis-0