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2004
Cyclopentane derivatives
Q 0030
Ruthenium-Catalyzed [3 + 2] Intramolecular Cycloaddition of Alk-5-ynylidenePromoted by the "First-Generation" Grubbs Carbene Complex.
51- 062 cyclopropanes
— A novel [3 + 2] alkylidene-cyclopropane-alkyne cycloaddition using Grubbs I catalyst is described. The cycloadducts are obtained in moderate to good yields. However,
the reaction is quite sensitive to steric bulk of the substituent. In these cases slightly
higher catalyst loading is required. — (LOPEZ, F.; DELGADO, A.; RODRIGUEZ, J.
R.; CASTEDO, L.; MASCARENAS*, J. L.; J. Am. Chem. Soc. 126 (2004) 33,
10262-10263; Dep. Quim. Org., Fac. Quim., Univ. Santiago de Compostela, E-15782
Santiago de Compostela, Spain; Eng.) — Bartels
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