硼-10富集硼烷Lewis碱加合物的合成
收稿日期: 2023-02-28
修回日期: 2023-04-25
网络出版日期: 2023-04-26
基金资助
国家自然科学基金(22171246); 国家自然科学基金(22271256)
Synthesis of 10B-Enriched Borane Lewis Base Adducts
Received date: 2023-02-28
Revised date: 2023-04-25
Online published: 2023-04-26
Supported by
National Natural Science Foundation of China(22171246); National Natural Science Foundation of China(22271256)
天然硼中主要含有两种稳定同位素, 即硼-10和硼-11, 丰度分别为19.78%和80.22%. 其中, 富集的硼-10同位素在核工业以及放射治疗癌症等方面有重要应用. 因此, 硼-10富集含硼化合物的合成具有重要的研究意义. 硼烷类化合物是合成这类化合物的主要起始原料, 但是目前合成硼-10富集硼烷化合物的方法还比较少. 以商业可得的硼-10富集硼酸为起始原料, 首先采用改进的文献方法合成了硼-10富集的Na10BH4, Na10BH4与碘单质反应生成乙硼烷(10B2H6), 然后, 乙硼烷与各种Lewis碱进行配位, 得到了一系列硼-10富集的硼烷Lewis碱加合物, 包括四氢呋喃硼烷(THF•10BH3)、二甲基硫醚硼烷(DMS•10BH3)、N,N-二甲基苯胺硼烷(DMA•10BH3)、氨硼烷(NH3•10BH3)、三甲胺硼烷(Me3N•10BH3)、三苯基磷硼烷(Ph3P•10BH3)和N-杂环卡宾硼烷[IPr•10BH3, IPr=1,3-双(2,6-二异丙基苯基)咪唑-2-亚基]. 该方法操作简单, 反应收率高, 为硼-10富集化合物的合成提供了物质基础.
梁沙沙 , 马艳娜 , 陈学年 . 硼-10富集硼烷Lewis碱加合物的合成[J]. 有机化学, 2023 , 43(5) : 1772 -1776 . DOI: 10.6023/cjoc202302032
In nature, boron is composed of a mixture of two stable isotopes, 10B (19.78%) and 11B (80.22%). The isotopical 10B-enriched compounds play important roles in many fields, such as the nuclear industry and cancer radiate treatment. Therefore, the syntheses of such kind of compounds is of important significance. These isotopical 10B-enriched compounds can be prepared from 10B-enriched boranes, however, the synthetic methods of such boranes are few. Herein, the synthetic methods of 10B-enriched Na10BH4, THF•10BH3, DMS•10BH3, DMA•10BH3, NH3•10BH3, Me3N•10BH3, Ph3P•10BH3, and IPr•10BH3 were developed. Firstly, Na10BH4 was synthesized with commercially available 10B(OH)3 as starting material based on the modified literature methods. Then the reaction of Na10BH4 and I2 provided 10B2H6, which could rapidly react with different Lewis bases to afford corresponding L•10BH3. Undoubtedly, these approaches provide convenient ways for the synthesis of 10B-enriched compounds.
Key words： 10B-enriched isotope; 10B(OH)3; Na10BH4; L•10BH3
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