Boronates stability

Reaction between aldehydes and boron-stabilized carbanions... 

Small amounts of boron stabilize a W(,Fe7-type /z-phase Hf 4,Alo 5oBQQ5 with B atoms occupying interstitial positions. In the cast alloys of Mo 4 5Re,5 5B 2 2... 

Similarly, boron stabilizes a ternary phase (Nioo.iBeo.37XBeo7Bo3)2, a MgCu2-type structure, by substitution of small metal atoms on a typical metal site. ... 

VIII. Polymer/Salt Hybrid Including Boron-Stabilized Imidoanion 190... 

VIII. POLYMER/SALT HYBRID INCLUDING BORON-STABILIZED IMIDOANION 190... 

As described in previous sections (Sections VI and VII), macromolecular design of polymer/salt hybrids with a highly dissociable lithium borate unit proved to be a valuable approach for single-ion conductive polymers. To further improve the degree of lithium salt dissociation, we have designed a polymer/salt hybrid bearing the boron-stabilized imidoanion (BSI)38 (Fig. 10). 

A synthesis of comblike organoboron polymer/boron stabilized imidoanion hybrids was examined via reactions of poly(organoboron halides) with 1-hexylamine and oligo(ethylene oxide) monomethyl ether and subsequent neutralization with lithium hydride (scheme 8). The obtained polymers (10) were amorphous soft solids soluble in common organic solvents such as methanol, THF, and chloroform. In the nB-NMR spectra (Fig. 11), neutralization of the iminoborane unit with lithium hydride... 

See also Borates Boric acid Sodium borates boron oxides, 4 246-249 boron oxides table,4 242t environmental concerns, 4 284—285 health and safety factors, 4 285-288 occurrence, 4 245—246 Boron perchlorates, 18 278 Boron phosphate, 4 242t, 283 Boron removal, from water, 14 418 Boron-stabilized carbanions, 13 660-661 Boron subhalides, 4 141 Boron suboxide, 4 242t Boron tribromide, 4 138 manufacture, 4 145—146 physical properties of, 4 139-140t, 325 reactions, 4 141 specifications, 4 147t uses of, 4 149 Boron trichloride, 4 138 manufacture, 4 145—146 physical properties of, 4 139-140t reactions, 4 141... 

Copper catalysed allylation of a boron stabilized secondary alkylzinc bromide preparation of 2-butyl-1-decen-4-ol8... 

Diboryl compounds do not yield aldehydes with alkaline hydrogen peroxide. Instead there is r d hydrolysis, presumably via a boron-stabilized carbanion (see Volume 1, Ch ter 2.6) which is protonated and then oxidized to the alcohol (equation 16). ... 

This molecule presents a lithium-boratirane (C-B-Li) ring formed by 1,2-migration of a trimethylsilyl group to a neighboring boron atom, generating a boron-stabilized carbanion. The X-ray stmcture of this derivative revealed two independent molecules per asymmetric unit. The two boratirane derivatives have been thoroughly characterized by multinuclear NMR and X-ray diffraction analysis. 

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