The new mono-B-alkylcyclotriborazanes 2-(PhC(2)H(4))B3N3H11 and 2-(C2H5)B3N3H11 have been synthesized by reaction of the mono-B-alkylborazines 2-(PhC(2)H(4))B3N3H5 and 2-(C2H5)B3N3H5 with HCl, followed by reduction of the 2-RB(3)N(3)H(5) . 3HCl intermediates with NaBH4. A structural determination of 2-(PhC(2)H(4))B3N3H11 confirmed that the B3N3 ring adopts a chair conformation with the alkyl group attached to B2 in an equatorial position.
Transition-metal-promoted reactions of boron hydrides. 12. Syntheses, polymerizations, and ceramic conversion reactions of B-alkenylborazines
作者:Anne T. Llynch、Larry G. Sneddon
DOI:10.1021/ja00198a034
日期:1989.8
reactions with acetylene, propyne, 1-butyne, and 2-butyne to give the previously unknown B-substituted alkenylborazines, B-(RHCdouble bond}CRprime})-Bsub3}Nsub3}Hsub5} (R,Rprime} = H, Me, or Et). For reactions employing RhH(CO)(PPhsub3})sub3}, typical yields of B-alkenylborazines range from 70 to 85% with the catalyst undergoing 25-50 turnovers an hour. Palladium bromide was found to catalyze
Synthesis of Mono-<i>B</i>-alkylcyclotriborazanes. Structural Characterization of 2-(PhC<sub>2</sub>H<sub>4</sub>)B<sub>3</sub>N<sub>3</sub>H<sub>11</sub>
作者:Andrew E. Wille、Patrick J. Carroll、Larry G. Sneddon
DOI:10.1021/ic960299f
日期:1996.1.1
The new mono-B-alkylcyclotriborazanes 2-(PhC(2)H(4))B3N3H11 and 2-(C2H5)B3N3H11 have been synthesized by reaction of the mono-B-alkylborazines 2-(PhC(2)H(4))B3N3H5 and 2-(C2H5)B3N3H5 with HCl, followed by reduction of the 2-RB(3)N(3)H(5) . 3HCl intermediates with NaBH4. A structural determination of 2-(PhC(2)H(4))B3N3H11 confirmed that the B3N3 ring adopts a chair conformation with the alkyl group attached to B2 in an equatorial position.
Fazen, Paul J.; Sneddon, Larry G., Organometallics, 1994, vol. 13, # 7, p. 2867 - 2877