in benzene byproducts: i-BuOH; Ar-atmosphere;; filtered; recrystd. from CH3CN; filtrate concd.; crystals washed with CH3CN ;elem. anal.;;

in benzene soln. of aldehyde and B-compd. addn. to P-compds., 3 h; solvent removing in vacuum, recrystn. (acetonitrile), crystals filtration off, washing (acetonitrile), products not separated, characterization by IR and NMR spectroscopies;