Chemistry - A European Journal p. 1324 - 1336 (1997)
Update date:2022-08-03
Topics:
Barluenga, Jose
Sanz, Roberto
Fananas, Francisco J.
The development of a new method for the intramolecular coupling of terminal alkynes and for the synthesis of seven- and eight-membered benzoheterocyeles is reported. The key steps involve the generation of zirconocene-alkyne complexes from 2-bromoalkenes and the subsequent intramolecular carbometalation of olefins or acetylides. The 8-unsubstituted zirconabicyclopentenes were carbonylated to afford unexpected products and allow access to polyfunctionalized molecules from simple starting materials.
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