DMAP). The bis(amine)boronium cations have been prepared and characterized by IR, 1 H and 11 B NMR spectra as PF 6 salts. Investigations of the water-soluble bis(amine)(methoxycarbonyl)hydroboron(+1) bromides, some of which could be prepared, showed that the hydrolytic stability of the ester group highly depends on the character of the amine: the complexes formed with tertiary amines are much more
摘要通过用过量的叔胺(
四甲基乙二胺,TME
DA;
喹啉, Q)以及
吡啶碱(
吡啶,Py; 4-
甲基吡啶,4-Pic; 4-二甲基
氨基吡啶,
DMAP)在更高的温度下。在4-Pic·BH 2 COOMe和
DMAP·BH 2 COOMe与胺过
溴化物的反应中,以高收率合成了含有手性
硼原子的不对称双(胺)(甲氧基羰基)氢
硼(+1)阳离子。在室温下在CH 2 Cl 2中进行(L·Br 2,L = Q,Py,4-Pic,
DMAP)。除这些新型阳离子羧基
硼化合物外,还利用胺-过
溴酸盐(L·Br 2; L = Py,4-Pic,
DMAP)的有效方法,制备了几种具有[LL'BH(CN)] +组成的新型阳离子
氰基硼龙配合物。 )和胺-
氰基
硼烷(L'·BH 2 CN,L'= 4-Pic,
DMAP)。已经制备了双(胺)
硼阳离子,并通过IR,1 H和11 B NMR谱表征为PF 6盐。对
水溶性双(胺)(甲氧基羰基)氢
硼(