This Report is concerned with major advances in organoboron chemistry over the past five years. It is perhaps appropriate that in 1979 the importance of the field and the unparallelled contributions of H. C. Brown were recognized by the award of a Nobel Prize. H. C. Brown has himself recently reflected upon forty years of hydride reductions.'There have been many recent reviews covering individual aspects of organoboron chemistry, but we cite only one book2" and a review2' because together they contain key references to all areas of organoboron chemistry that are likely to be of interest to organic chemists.
Chloralkane lassen sich durch Umsetzen von Trialkylboranen oder B‐alkyl‐9‐borabicyclo[3.3.1]nonanen mit Dichloramin Tunter milden Bedingungen darstellen: Reaktionen .(I)‐(II) bzw. (IV) ‐+ (V) (die endo‐exo‐Verteilung bei dem Produkt 2‐Norbornylchlorid wird nicht untersucht).
Durch Umsetzung von Diphenylbromboran (I) mit Di‐isopropylcarbamoyllithium (II) und anschließende wäßrige Aufarbeitung und Chromatographje entsteht die Verbindung (III) und nicht das erwartete Amid (IV).
Monochloroborane-dimethyl sulphide, BH,Cl.-SMe,, is formed in essentially quantitative yield upon reflux of an equimolar mixture of borane-dimethyl sulphide, BH,.SMe2, and tetrachloromethane ; it can be used directly for production of dialkylchloroboranes by the hydroboration of alkenes.
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