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Reaction of 3,5-(CF3)2PzLi with [Cp*RuCl2]n (2:1) in diethyl ether at −78 °C gives [(Cp*RuLi)2(μ4-O)(μ2-Cl)(μ-3,5-(CF3)2Pz)3] (1) in 75% yield [3,5-(CF3)2Pz = 3,5-bis(trifluoromethyl)pyrazolate]. With a 1:1 ratio of [Cp*RuCl2]n to 3,5-(CF3)2PzLi, dark-green crystalline [Cp*Ru(μ-Cl)]2(μ-3,5-(CF3)2Pz) (2) is produced in ca. 50% yield. The reaction of 3,5-(CF3)2PzLi with [RuCl2(1,4-Me,iPrC6H4)]2 in diethyl ether at −78 °C gives the chloride-bridged dimer [RuCl(η6-1,4-Me,iPrC6H4)(μ-3,5-(CF3)2Pz)]2 (3) in 65% yield. The reaction of Cp*Ru(OSO2CF3)2 with 3,5-(CF3)2PzLi (2:1) in diethyl ether at −78 °C produced the unusual dinuclear RuIII−RuIII complex [Cp*Ru(μ-O)(μ-η5,η1-C5Me4CH2)Ru(η1-3,5-(CF3)2Pz)]·0.25Et2O (4) in 75% yield. Complexes 1–4 have been characterized spectroscopically and by single-crystal X-ray diffraction studies.

The utilization of enones as latent enolates enables regioselective enolate formation from chemically robust presursors. In this communication, we report a catalytic Michael cycloisomerization of bis(enones) under Morita−Baylis−Hillman conditions. Upon exposure to 10 mol % tributylphosphine, bis(enone) substrates afford both five- and six-membered ring products. Notably, unsymmetrical bis(enones) possessing sufficient steric or electronic bias yield single isomeric products.

Reactions of the "salen" type Schiff bases H(2)L(1) and H(2)L(2) with Cd(OAc)(2).2H(2)O gave complexes with Cd(2) and Cd(3) cores and an extended 1-D framework architecture [H(2)L(1) = N,N'-(1,2-phenylenyl)-bis(5-bromo-2-hydroxy-3-methoxybenzaldimine; H(2)L(2) = N,N'-(propyl)-bis(5-bromo-2-hydroxy-3-methoxybenzaldimine)].

Exposure of enone substrates 1a-18a, which possess appendant ketone, ester, and nitrile moieties, to Et2Zn in the presence of catalytic Cu(OTf)2/P(OEt)3 provides the cyclized products in good to excellent yields and diastereoselectivities. These results represent the first use of ketones, esters, and nitriles as terminal electrophiles in Cu-catalyzed conjugate addition-electrophilic trapping.

The utilization of enones as latent enolates enables regioselective enolate formation from chemically robust presursors. In this communication, we report a catalytic Michael cycloisomerization of bis(enones) under Morita-Baylis-Hillman conditions. Upon exposure to 10 mol % tributylphosphine, bis(enone) substrates afford both five- and six-membered ring products. Notably, unsymmetrical bis(enones) possessing sufficient steric or electronic bias yield single isomeric products.