Intramolekular verbrückte Organo-bis[dialkylaminochlorborane] / Intramolecularly Bridged Organo-bis[dialkylaminochloroboranes]
作者:Wolfgang Wienmann、Achim Hergel、Thomas Deforth、Albrecht Krämer、Hans Pritzkow、Walter Siebert
DOI:10.1515/znb-1996-0808
日期:1996.8.1
The synthesis and structural properties of organo-bis-dialkylaminochlorboranes X(BNR2Cl)2, X = R2NB(CHCH3)2, o-C6H4, 1-α-C6H4CH2, and 1.8-C10H6 are reported. The steric influence of the alkylamino group and the geometrical situation caused by a chain of sp2 or sp3 hybridized carbon atoms control the formation of intramolecular donor-acceptor bonds. In o-(C6H4)(BNMe2Cl)2 (5) only one amino-boron donor-acceptor
报道了有机双二烷基氨基氯硼烷 X(BNR2Cl)2、X = R2NB(CHCH3)2、o-C6H4、1-α-C6H4CH2 和 1.8-C10H6 的合成和结构特性。烷基氨基的空间影响和由 sp2 或 sp3 杂化碳原子链引起的几何情况控制了分子内供体-受体键的形成。在o-(C6H4)(BNMe2Cl)2 (5) 中,仅观察到一个氨基-硼供体-受体键。R2NB(CHCH3BClNR2)2 中烷基的空间影响可从 7a (R = Me) 中两个供体-受体键的形成中辨别出来,而 7b (R = iPr) 是非桥接物种。苯并镁环丁烯与氯双(二甲氨基)硼烷反应生成环状 1-α(C6H4CH2)(BNMe2Cl)2 (9)。1,8-二锂萘与 ClB(NR2)2 (R = Me, Et, iPr) 反应生成 1,8-(C10H6)[B(NR2)2]2 (10a-c),它与 BCl3 反应得到 1,8-(C10H6)(BClNR2)2