in dichloromethane addn. of BBr3 to a stirred soln. of the borazine in CH2Cl2 at -10°C over 1 h, warming to room temp., refluxing for 1 h; filtn., evapn. of volatiles under reduced pressure, sublimation under vacuum (40-50°C bath temp.), elem. anal.;

Rh(H)(CO)(PPh3)3 in neat (no solvent) Kinetics; borazine and excess ethylene (1:3 ratio) were condensed (-196°C)to a catalytic amt. Rh-complex, mixt. allowed to warm to room temp., mixt. stirred 2 h; flask frozen on vacuum line (-196°C) and degassed, volatile material fractionated through traps at -63 and -196°C, product found in the -63°C trap;

ethylmagnesiumhalide;

ammonia T=450°C; P=36775.4 Torr;

hydrogen T=210 - 240°C; P=69873.2 Torr;

in neat (no solvent) byproducts: (CH3)3SiCl; absence of moisture; addn. of silylamine to borane derivative (during 4h, cooling in ice/EtOH, stirring), slow warming to room temp. (overnight); distn. of Me3SiCl (50-55°C, atmospheric pressure), repeated fractional distn.;

in diethyl ether educts were stirred overnight; evapd., residue distd. under vac. at 195-198°C (1 Torr), elem. anal.;

in diethyl ether mixt. was heated for 16 h to 70-80°C; volatile material was distd. off, viscous product under reduced pressure, NMR, MS;

in diethyl ether soln. of (H2N)Me2B3N3Me was cooled to -78°C, soln. of MeLi was added, mixt. was warmed, stirred overnight, cooled, soln. of (ClBNMe)3 was added, stirred and warmed to room temp., stirred overnight; filtd., evapd., residue dissolved in a min. of Cl2CH2, concd., elem. anal.;

Rh(H)(CO)(PPh3)3 in neat (no solvent) Kinetics; borazine and excess ethylene (1:3.5 ratio) were condensed (-196°C) to a catalytic amt. Rh-complex, mixt. allowed to warm to room temp., mixt. turned reddish brown within min, mixt. stirred 26 h; flask frozen on vacuum line (-196°C) and degassed, volatile material fractionated through traps at -78, -110 and -196°C, productsfound in the -78°C trap, identified by GC/MS;