Ms. Sell et Rd. Rieke, CARBOCYCLIZATION OF E,E-1,4-DIPHENYL-1,3-BUTADIENE WITH DICHLOROALKANES MEDIATED BY RIEKE METALS, Synthetic communications, 25(24), 1995, pp. 4107-4113
The Rieke metal complexes of barium and strontium readily react with E
F-1,4-diphenyl-1,3-butadiene to form metal-diene reagents. Upon treatm
ent with 1,n-dichloroalkanes, these metallocycles are transformed into
ring derivatives in excellent chemical yield.