Navigation

0 Hits

  • Previous / Next

You are using Science Of Synthesis as a Guest.
Please login to access the full content or check if you have access via
6.1.27.3 Method 3: Zirconium-Mediated Dimerization of Alkynylboronates

DOI: 10.1055/sos-SD-006-00639

Albrecht, K.; Kaufmann, D. E.Science of Synthesis, (20056701.

Zirconocene-mediated coupling of CC bonds is an established procedure in organic synthesis,[‌41‌] and can also be applied to the preparation of organoboronates.[‌42‌,‌43‌] Starting from alkynylboronates, it allows the direct access of dienyldiboronates which are otherwise difficult to obtain, and are valuable building blocks for the synthesis of substituted polyene systems.

Meeeee(M) eeeeeee eeeeeee eeeeeeee ee eeeeeee eeeeeeeeeeeeeeee 88, eeeeeeee ee eeee ee eee eeeeeeeeeeeeeeee ee eeeeeeeeeeeeeeee 88, eeeeeeee 8,8-eeee-8,8-eeeeeeeeeeeee 88 eeeeeeeeeee eeee M,M eeeeeeeeeeeee eeeee eee eeeeee eeeeee eeeee eee eee (Meeeee 8).[‌88‌] Mee eeeeeeeeeeeeeeee ee eee eeeeeeee ee eeeeeeee ee eee eeeeeeeeeee eeeeeee eeeeeeee. Meeeeeee ee eeeeeeeeeeeeeeee 88, eeeee e eee(η8-eeeeeeeeeeeeeeee)eeeeeeeee(MM) eeeeeee eeeeeeeee ee eeee, eeeeeeee eee eeeeeeeeeee 88 eee 88 ee e eeeee ee 8:8. Mee eeeeeeee eee eeeeeeee ee eeeeee eeeeee ee eeeeeeeeeeeeeeeeeeeee eeeeeeeeeeeee,[‌88‌] eee eee ee eeeeeeeee eee ee eeeee eeeeeeeee eeeeeeeeeeee ee eeeeee. Mee eeeeeeeeeeeee eeeeeeeeeee 88 eee ee eeeeeee ee MeeeeeMeeeeee eeeeeeeee (eee Meeeeee 8.8.88.8.8).[‌88‌,‌88‌]

Meeeee 8 Meeeeeeeeee-Meeeeeee Meeeeeee ee Meeeeeeeeeeeeeee[‌88‌]

Meeeeeeeeeee Meeeeeeee

8,8-Meeee-8,8-eeeeeee(8,8,8,8-eeeeeeeeeee-8,8,8-eeeeeeeeeeeee) 88; Meeeeee Meeeeeeee:[‌88‌]

Me e eeeeeee eeeeeeeeee ee Me(Me)8MeM (8.888e, 8.88eeee) ee eee MMM ee 88°M eeeee eeeee, eee eeeee eeeeeeeeeeeeeee 88 (8eeee) ee MMM (8eM). Mee eeeeeee eee eeeeeee eee ee eeeeeeeeee 88eee eeeee ee eeeeee eeeee eee eeeeee eeeeee. Meeee eee eeeeeeee ee MeMe (8.888e, 8.88eeee) eee eeeeeee eee eeeeeee eee 88e ee eeee eee eeeeeee eeeeeee, eeee eeeeeeeeeee eeeeeeeeee ee eeeeeeee Me. Mee eeeeeee eee eeeeeeee eeee eee. ee MM8Me eeee, eeeeeeee eee eeeeeeeee eeee eeeeee (8×). Mee eeeeeeee eeeeeeee eeee eeeee (Me8MM8), eeeeeeeeeeee ee eeeee, eee eee eeeeeee eee eeeeeeee ee eeeeeeeeeeeeee (eeeeee eee, Me8M/eeeeee 8:88); eeeee: 8888%.

References


Cookie-Einstellungen