By Prof. Armin de Meijere (auth.)
Carbon wealthy Compounds are outlined the following as carbon skeletons with a carbon to hydrogen ratio of 1:(=<1) such as all-carbon compounds (i.e. carbon allotropes). the present quantity covers glossy tools for the guidance and transformation of polycyclic fragrant compounds together with substructures of C60-fullerene and novel hugely advanced cyclophanes. A graph theoretical remedy provides a substitution rule, permitting the outline of already latest buildings and likewise the definition of recent tough artificial pursuits. within the moment a part of this quantity, the synthesis and distinct chemistry of oligocyclic compounds which include 5- and 6-membered earrings, so-called centro-polyhydrindanes in addition to oligoquinanes, particularly hugely unsaturated ones, are discussed.
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Additional info for Carbon Rich Compounds I
Who has connected one calixarene and one cavitand to yield a hybrid square prism (131, R=C3H7 , R¢=C11H23) [181, 182]. 130 131 Alternatives to the square prisms are known from Cram’s container molecules called carcerands [183, 184]. ” The encapsulated guests vary from simple solvent molecules to highly reactive Design of Novel Aromatics using the Loschmidt Replacement on Graphs 31 intermediates such as cyclobutadiene and benzyne [187, 188]. In a strict view carcerands have a more complicated embedded-graphs than just a simple square prism.
2 Additional Reductive Coupling Reactions for the Synthesis of PAHs . . . . . . . . . . 1 Intermolecular Reactions . . . . . . . . . . 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.
Chiral fullerenes, such as C76 , provide a novel cage graph that creates a chiral reticulation on the sphere [192–194]. A polyaromatic example representing the icosahedron is to our knowledge, unknown. 135 136 8 Topological Structures Topological graphs are groups of cyclic graphs that have distinct character only by their connectivity and require no Euclidean molecular rigidity to remain different. The theoretical background in this subject has already appeared in several excellent reviews [10, 195,196].