byproducts: CBr4; B2Br4 and CFBr3 were reacted in a NMR-tube at ambient temp. for 9,75 h; products detected by (19)F- and (11)B-NMR, CBr4 by (13)C-NMR;

B2Br4 and CFBr3 were reacted in a NMR-tube at ambient temp. for 3,75 h; products detected by (19)F- and (11)B-NMR, CBr4 by (13)C-NMR;

tetrachloromethane Vac.-distn. of B2Br4 to CCl4, heating in an oil-bath (96°C, 5.75 h).; Monitored by (11)B-NMR.;

in neat (no solvent) Teflon-valve-equipped standard vacuum line or a nitrogen-filled glovebox;excess B5H9;pentaborane, B2Br4 separately condensed in the reactor, after 20 min at room temp., vessel cooled to -10 ° C,; over course of the following 10 h,all volatile material removed,reactor warmed to room temp.,all volatile material at room temp. were removed,BBr2B5H8 extd. with CH2Cl2, yield:80percent on basis of amt. of B2Br4 employed, 86percent on basis of unrecovered B5H9;

Vac.-distn. of B2Br4 to CBr4, heating in an oil-bath (96°C, 5.75 h).; Monitored by (11)B-NMR.;

B2Br4 and CFBr3 were reacted in a NMR-tube at ambient temp. for 3,75 h; products detected by (19)F- and (11)B-NMR, CBr4 by (13)C-NMR;

暂无反应条件数据

Sequentially condensing C2H4 and B2Br4 into a reactor in inert atmosphere, slow warming to ambient temp., stirring for 3 days.; Removing of volatiles in vac. at 0°C.;