132777-33-4Relevant academic research and scientific papers
Ligand- and base-free Pd(II)-catalyzed controlled switching between oxidative heck and conjugate addition reactions
Walker, Sarah E.,Boehnke, Julian,Glen, Pauline E.,Levey, Steven,Patrick, Lisa,Jordan-Hore, James A.,Lee, Ai-Lan
supporting information, p. 1886 - 1889 (2013/06/04)
A simple change of solvent allows controlled and efficient switching between oxidative Heck and conjugate addition reactions on cyclic Michael acceptor substrates, catalyzed by a cationic Pd(II) catalyst system. Both reactions are ligand- and base-free and tolerant of air and moisture, and the controlled switching sheds light on some of the factors which favor one reaction over the other.
PESTICIDALLY ACTIVE KETONE AND OXIME DERIVATIVES
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Page 41-42, (2008/06/13)
Compounds of formula (I), wherein A0, A1, and A2 are each independently of the others a bond or a Cl-C6alkylene bridge; A3 is a Cl-C6alkylene bridge which is unsubstituted or substituted by from one to six identical or different substituents selected from halogen and C3-C8cycloalkyl; Y is, for example, 0, S, SO or S02; M is 0 or NOR6, X1, and X2 are each independently of the other fluorine, chlorine or bromine; R1, R2and R3 are, for example, H, halogen, OH, SH, CN, nitro, C1-C6alkyl, Cl-C6haloalkyl, Cl-C6alkylcarbonyl, C2-C6alkenyl, C2-C6haloalkenyl or C2-C6alkynyl; Q is, for example, O, S, SO or SO2; W is, for example, 0, S, SO, SO2, -C(=O)-O- or -0-C(=O)-; T is, for example, a bond, 0, S, SO, S02, -C(=O)-O-or -0-C(=O)-; D is CH or N; R4 is, for example, H, halogen, OH, SH, CN, nitro, Cl-C6alkyl or C1-C6haloalkyl; R5is, for example, Cl-Cl2alkyl, C3-C8cycloalkyl or -N(R7)2; R7 is H, C1-C6alkyl, Cl-C3haloalkyl, Cl-C6alkylcarbonyl, Cl-C3haloalkylcarbonyl, Cl-C6alkoxycarbonyl, C3-C8Cycloalkyl, C3-C8 cycloalkylcarbonyl or formyl; k is 0, 1, 2, 3 or 4; m is 1 or 2; and q is 0, 1 or 2; and, where applicable, their possible E/Z isomers, E/Z isomeric mixtures and/or tautomers, in each case in free form or in salt form, a process for the preparation of those compounds and their use, pesticidal compositions in which the active ingredient has been selected from those compounds and agrochemically acceptable salts thereof, and a process for the preparation of those compositions and their use, to plant propagation material treated with those compositions, and a method of controlling pests.
Synthesis and use of water-soluble sulfonated dibenzofuran-based phosphine ligands
Sollewijn Gelpke, Arjan E.,Veerman, Johan J.N.,Goedheijt, Marcel Schreuder,Kamer, Paul C.J.,Van Leeuwen, Piet W.N.M.,Hiemstra, Henk
, p. 6657 - 6670 (2007/10/03)
The syntheses of three triphenylphosphine analogues with one, two or three phenyl groups replaced by 2-dibenzofuranyl groups, respectively, and one enantiopure analogue of the atropisomeric diphosphine MeO-BIPHEP with all four phenyl groups replaced by 2-dibenzofuranyl are reported. Sulfonation of these compounds with sulfuric acid at rt proceeded with complete regioselectivity at the 8-position in the dibenzofuran moieties. These results proved the usefulness of dibenzofuran as a structural moiety in the synthesis of water-soluble phosphine ligands. The dibenzofuran-based, water- soluble triphenylphosphine analogues were used as ligands in palladium- catalysed aqueous phase Heck and Suzuki reactions and in the rhodium- catalysed two-phase hydroformylation of propene.
A Systematic Study of Benzyl Cation Initiated Cyclization Reactions
Angle, Steven R.,Louie, Michael S.
, p. 2853 - 2866 (2007/10/02)
A systematic investigation of benzyl cation inititiated cyclization reactions to form six-membered carbocycles is presented.The generation of benzyl cations from benzylic bromides, ethers, and alcohols followed by intramolecular capture provided good yields of cyclized products by use of several different cyclization terminators (e.g., phenyl, alkene, β-keto ester).A study on the effect of changing the electronic nature of substituents para to the benzyl cation showed that even electron-withdrawing substituents such as quaternary ammonium afford high yields of cyclization products.The formation of five- and seven-membered carbocycles was briefly investigated and found to be less general than the formation of the corresponding six-membered carbocycles.
