Carbaboranes synthesis

An area of work closely related to poly(ether-ketone-carbaborane) that attracted significant interest in the late 1990s, is the synthesis of poly(aryletherketone-carborane)s. Studies were conducted investigating the incorporation of carborane units into the... 

The Interplay of Alkylldyne and Carbaborane Ligands in the Synthesis of Electronically Unsaturated Mixed-Metal... 

An important method for the synthesis of carbaboranes is the reaction of a borane cluster with an alkyne. However, an analogous reaction of a metallaborane cluster with an alkyne is not commonly used to prepare metallacarbaborane clusters. Equation (21) illustrates one example. 

Boron atoms in transition metal clusters Denuding the boron atom of B-H interactions in transition metal boron clusters Transition metal boride clusters at the molecular level Recent advances in the chemistry of carborane metal complexes incorporating d and /block elements The interplay of alkylidyne and carbaborane ligands at metal centres. I. Synthesis of electronically unsaturated mixed-metal complexes. II. Proton-mediated reactions... 

Several carbaboranes already described have been studied with the aim of accessing compounds that of use in BCNT. >87.102 This section reviews work that is specifically targetted at studies related to BNCT. The synthesis of carboranylmethyl ethers of steroids has been reported steroidal 2-propynoxy derivatives have been inserted into 6,9-Ws(acetonitrile)-decaborane(12). These reactions give new compounds containing estrane and androstane skeletons which are... 

The synthesis and crystal structure of an unusual tetranuclear gold(I) complex incorporating ligated 1,2-C2Bio-carbaborane cages have been reported. ... 

Zakharkin and co-workers have studied, in detail, the synthesis and reactions of fluorovinyl-substituted carbaboranes (Vol. 1, p. 89). In Scheme 12 are shown some of the reactions described. Apparently the ability of the o-carbaboranyl nucleus to stabilize a negative charge during nucleophilic addition-elimination reactions exceeds that of either chlorine or trifluoro-methyl, attack on the double bond occurring p to the nucleus. > 4,4-Dichloro-3,3-difluoro-l-phenylcyclobutene reacts with aryl-lithium compounds, sodium thiolates NaSAr (Ar = Ph,p-MeC,H4,orn-H2N-CeH4), or pyridine or other heterocyclic bases by substitution with rearrangement. 

Carbaborane-Siloxane Copolymers —A comprehensive review has appeared of these commercially important copolymers. A new and convenient synthetic route to Dj-ffi-carbaborane-siloxane polymers has been reported, in which the copolymer is produced in a one pot synthesis from m-carbaborane by reaction with n-butyl-lithium to form its dilithio salt, and this then allowed to react with 1,5-dichlorotrisiloxane to give the desired polymer. Ultra-high molecular weight... 

This Chaptsr concerns the synthesis, characterisation, reactions, and properties of carbaboranes and their a- and cape-bonded metal derivatives. 

Possibly some of the most Interestlnp work in synthesis presently concerns carbon rich -carbaboranes. Three isomers of compounds have now been reported. The parent compound and... 

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