SYNTHESIS AND REACTIONS OF CYCLIC BORON-NITROGEN COMPOUNDS
SAINT LOUIS UNIV MO
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The reaction of BCl3 and o-phenylenediamine dihydrochloride was studied in detail. A convenient synthesis was developed for the preparation of 2-chloro-1,3,2-benzodiazaboroline, which proved to be a useful intermediate in the preparation of 1,3,2-benzodiazaboroline and its B-substituted derivatives. The reactions of BCl3 with ethylenediamine dihydrochloride are being studied. Samples of B-trichloroborazole I in benzene maintained for prolonged periods at 80 C appeared to undergo slight reaction. Compound I reacted vigorously with triethylamine. Apparently extensive reaction occurs when I is treated with ethyleneimine, phthalimide, or potassium phthalimide in benzene.