论文部分内容阅读
采用~１Ｈ，~１３Ｃ ＮＭＲ，~１１Ｂ ＮＭＲ极化转移实验ＤＥＰＴ１３５，ＤＥＰＴ９０和二维ＮＭＲ实 验以及ＩＲ等技术，对用于潜手性酮类不对称硼烷还原的二氨基二醇配体及其衍生物进 行了鉴定，并对其与硼烷原位形成的催化剂结构进行了 ｉｎ ｓｉｔｕ ＮＭＲ研究，发现了催化 剂在反应溶液中的结构转化现象，确定了催化剂的结构为新型的双活性中心催化剂 ──双噁唑硼烷．
The diaminodiol ligands for the asymmetric boranes of the ketones and their diaminodiol ligands with ~ 1H, ~ 13C NMR, ~ 11B NMR polarization transfer experiments DEPT135, DEPT90 and two-dimensional NMR experiments and IR and other techniques Derivatives were identified, and its in situ formation of boranes with the catalyst structure of the in situ NMR study found that the catalyst in the reaction solution of the structural transformation of the catalyst structure was identified as a new double-site catalyst - - Bisoxazole borane.