Diazaborine

1,2-Dihydro-1-hydroxy-2-(p-tolylsulfonyl)-2,3,1-benzodiazaborine; 1,2-Dihydro-1-hydroxy-2-(p-tosyl)-2,3,1-benzo[e]diazaborine;1,2-Dihydro-1-hydroxy-2-[(4-methylphenyl)sulfonyl]-2,3,1-benzodiazaborine;