Analogies transfer

For example, the reaction of lithium diisopropylamine (82) with N-oxide (134) leads to a rather selective deprotonation at the C-4 atom (Scheme 3.111, Eq. 1). An analogous transfer of double bond was observed for six-membered cyclic nitronates 135 (Eq. 2) (143). However, intermediates (136) that formed in the latter case undergo fast fragmentation and give conjugated ene-oximes (137) as the final products. 

Transfer of hydrogen to carbonyl groups differs from analogous transfer to unsaturated hydrocarbons primarily due to the greater likelihood for involvement of free ionic or ion-pair intermediates in the former reaction. Linstead and coworkers (36) have shown that transfer from dihydroaromatics to quinones is best explained by a rate limiting step involving hydride ion transfer. The applicability of this mechanism to other systems is presently unclear (40). For example, under appropriate conditions quinones can generate free radicals and form adducts (37). Pseudo-first order rate constants for... 

Gick, M. (1985). The effect of a diagram retrieval cue on spontaneous analogical transfer. Canadian Journal of Psychology, 39, 460-466. 

Gick, M., 8c Holyoak, K. J. (1983). Schema induction and analogical transfer. Cognitive Psychology, 15, 1-38. 

An alternative pathway for the synthesis is based on an analogous transfer of Gal from UDP-Gal and pennits the incoiporation of Gal analogs or labeled Gal precursors. In this case, a different approach has been used to coiwert UDP-Glc into UDP-Gal. UDP-Glc reacts with Gal 1-phosphate under catalysis by Gal 1-phospliate uridylyItransferase to fonn UDP-Gal and Glc 1-phosphate. The Gal... 

The learning to use a command device is prone to analogical transfer... 

Analogical transfer from a programming language to the learning of another programming language... 

Analogical transfer of a goal structure from the familiar domain of manipulation of physical objects... 

The chain transfer reaction of PSLi with toluene at 60 ° C was investigated during the polymerization of styrene using C-labeled toluene. The calculated chain transfer constant (feo/fep) was 5 X 10 . A much larger chain transfer constant (feo/fep = 1.28 X lO ) was fotmd for analogous transfer from toluene to poly(styryl)sodium. In general, alkyllithium-initiated anionic polymerizations of styrenes and dienes should not be carried out in toluene as solvent because of the occurrence of... 

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