155720-53-9Relevant articles and documents
Synthesis of 5-/10-membered ring analogues of the dienediyne core of neocarzinostatine chromophore by palladium(0)-mediated ring-closure reaction
Suffert, Jean,Abraham, Estelle,Raeppel, Stephane,Brueckner, Reinhard
, p. 447 - 456 (2007/10/03)
The new dienediynes 5, 6, and 7 were synthesised from a monoprotected diyne and an already described bis(enol triflate) 4 derived from formylcyclopentanone. When 5 and 6 were subjected to nucleophilic attack by a thiol, cycloaromatisation occurred, and the phenanthrenes 23a and 23b were obtained in 30 and 42% yield, respectively. VCH Verlagsgesellschaft mbH, 1996.