Carbon-arsenic bond, synthesis

Another synthesis of the carbon—arsenic bond is also most useful in making arsonomethyl compounds. The problems mentioned earlier... 

More often than not, the assemblage of the carbon framework in the course of a total synthesis also leads to the appearance of additional functional groups in the synthesized structure. These groups served the purpose of mandatory auxiliaries in earlier steps of the synthesis. As these groups must be removed, destructive methods (to cleave specific C C bonds) are also presented as important tools in the arsenal of synthetic methods. 

The chemistry of phospholes and related phospholide anion complexes remains a very active area, which also continues to attract the attentions of the theoretical community. Among recent theoretical contributions are a consideration of the stability, structure and bonding in lithium- and beryl-lium-pentaphospholide systems, the aromaticity of the pentaphospholide anion (and its arsenic analogue) as probed by ring currents,the remarkable influence of fluorine-substitution (either at phosphorus or at a ring carbon) on the electronic and thermochemical properties of phospholes,and the effects of methyl and vinyl substitution at various positions on the geometries, relative stabilities and Diels-Alder reactivities of phospholes. An ab initio approach has been used to reinterprete some spectral and thermochemical properties of IH-phospholes. The synthesis and reactivity of phospholes of reduced... 

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