By Armin de Meijeres
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Hardbound. development in knowing the character of the organic membrane has been very fast over a extensive entrance, yet nonetheless wallet of lack of information stay. program of the innovations of molecular biology has supplied the sequences of a really huge variety of membrane proteins, and has ended in the invention of superfamilies of membrane proteins of similar constitution.
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Needless to say that these halogen substituents must normally be introduced at those carbon atoms which eventually participate in the new C-C bond. If this is not possible for synthetic reasons, the substitution in other positions can provide an interesting alternative. It has 52 S. Hagen · H. Hopf 2 11 6 14 a 14b 12 13 15 a 15 b Scheme 4. g. 15a Æ 13, Scheme 4, [40, 48]). The thermal homolysis of a C(sp2)C(sp3) bond to create the desired aryl radicals in the synthetic approach to highly condensed PAHs has also been reported very recently, but it seems to be inferior compared to the C-halogen scission .
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2 Intramolecular Reactions . . . . . . . . . . 3 Intermolecular Cross Coupling Reactions between Aromatic Electrophiles and Nucleophiles . . . . . . . . . . . . . . . 50 52 53 55 . . . 56 . . . 60 . . . 60 . . . . . . . . . . 62 63 63 64 . . . 65 Topics in Current Chemistry, Vol. 196 © Springer Verlag Berlin Heidelberg 1998 46 S. Hagen · H. 5 Oxazoline Coupling (Meyer’s Coupling) . . . . . Transition Metal Catalyzed Grignard Coupling Reactions Suzuki and Stille Coupling .