1,3-Diethynylallenes: New Modules for Three-Dimensional Acetylenic Scaffolding
- 13 June 2001
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 40 (12) , 2334-2337
- https://doi.org/10.1002/1521-3773(20010618)40:12<2334::aid-anie2334>3.0.co;2-7
Abstract
Regioselective Pd0‐catalyzed cross‐coupling of bispropargylic precursors 1 with silyl‐protected alkynes gave rise to the first 1,3‐diethynylallenes 2 [Eq. (1), LG=leaving group]. In enantiomerically pure form, these novel carbon‐rich modules could provide access—by oxidative oligomerization—to a fascinating new class of helical oligomers and polymers.Keywords
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