Claisen


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Claisen

(klī'sen),
Ludwig, Germany chemist, 1851-1930. See: Claisen condensation.
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Serving -- Mund: Carrillo (1 aces); Whe: Moser (4 aces), Thomas (2 aces); Attacking -- Mund: Osornio (3 kills), Rey (2 kills), Morales (2 kills), Gibbons (2 kills); Whe: Moser (12 kills), Thomas (4 kills); Setting -- Mund: Brua (2 assists), Claisen (2 assists); Whe: Tsogtbaatar (12 assists); Digs -- Whe: Hernandez 13, Moser 4; Blocks -- Stev: Rey 4, Osornio 2; Whe: Thomas 2, Baranowski 2.
Claisen (2004) administered a test on the attachment of an intellectually disabled child towards his professional carer.
Chalcone is also commonly prepared via Claisen Schmidt condensation.
Claisen condensation between cyano-2-acetic and the aldehyde in the presence of piperidine yielded CL-1 as a purple solid with a yield of 41%.
Toda, Solvent-free Claisen and Cannizzaro reactions, Tetrahedron Lett., 42, 7983 (2001); (d) K.
An efficient synthesis of the potent phytoestrogens 8-prenylnaringenin and 6-(1,1-dimethylallyl)naringenin by europium(III)-catalyzed Claisen rearrangement.
Simple stereoselective version of the Claisen rearrangement leading to trans-trisubstituted olefinic bonds.
HBP-AL showed a glass transition temperature ([T.sub.g]) at 105[degrees]C and a exothermic peak at 264[degrees]C corresponding to the Claisen Rearrangement of the allyl groups [32], While the H-bonding between the residue phenolic OH groups would lead to a higher [T.sub.g] of HBP-AL, the DSC revealed that they have much lower [T.sub.g] than other linear PAEKs ([T.sub.g] > 160[degrees]C) [10] at the similar molecular weight due to their highly branched macromolecular architectures and the flexible allyl groups.
A Claisen condensation [43] was carried out on 3-methylcyclohexanone with ethyl formate using metallic sodium in dry ether in presence of one drop of ethanol to furnish 4-methyl2-oxocyclohexanecarbaldehyde (13).
(35) The MVA pathway begins with the synthesis of acetoacetyl-CoA, which was first reported to be biosynthesized via a thioester-dependent Claisen condensation reaction between two molecules of acetyl-CoA, and is catalyzed by acetoacetyl-CoA thiolase (EC 2.3.1.9).