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2005
Metathesis reactions
O 0286
Boron-Directed Regio- and Stereoselective Enyne Cross Metathesis: Efficient Synof Vinyl Boronate Containing 1,3-Dienes. — The title reaction, carried out for
37- 051 thesis
a variety of borylated alkynes and terminal alkenes, affords the target compounds in
good to excellent yields. All products can be further functionalized. The E/Z-selectivity
depends on the substituents in both reaction partners. An intramolecular version of the
reaction is examplified for enyne (XXI) followed by Diels—Alder reaction to give the
tricyclic heterocycle (XXIV). — (KIM, M.; LEE*, D.; Org. Lett. 7 (2005) 9,
1865-1868; Dep. Chem., Univ. Wis., Madison, WI 53706, USA; Eng.) — Y. Steudel
2005
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