The direct substitutions of 9H-xanthen-9-ol with indoles in a room temperature ionic liquid medium BmimBF4
作者:Ling-yan Liu、Bing Wang、Hong-mei Yang、Wei-xing Chang、Jing Li
DOI:10.1016/j.tetlet.2011.08.085
日期:2011.10
simple, atom economical, highly efficient and green protocol has been developed for the SN1-type substitutions of 9H-xanthen-9-ol with indoles or other nucleophiles (such as diketone and pyrrole). This approach provides the substitution products in high or excellent yields in the BmimBF4 media at roomtemperature.
已经开发出一种简单,原子经济,高效且绿色的方案,用于用吲哚或其他亲核试剂(例如二酮和吡咯)将9 H-黄嘌呤-9-ol进行S N 1型取代。在室温下,该方法可在BmimBF 4培养基中以高收率或优异的收率提供替代产品。
1,3-Dichloro-tetra-n-butyl-distannoxane: a new application for catalyzing the direct substitution of 9H-xanthen-9-ol at room temperature
作者:Ling-yan Liu、Yan Zhang、Kai-meng Huang、Wei-xing Chang、Jing Li
Biocompatible ionic liquid [Betaine][H<sub>2</sub>PO<sub>4</sub>] as a reusable catalyst for the substitution of xanthen-9-ol under solvent-free conditions
作者:Anlian Zhu、Tong Wang、Wanlu Feng、Jianji Wang、Lingjun Li
DOI:10.1039/d0ra05374k
日期:——
An ionicliquid, namely [Betaine][H2PO4], was found to be an efficientcatalyst for the direct substitution reaction of xanthen-9-ol with different nucleophiles under solvent-free conditions. This catalytic system is easy to be operated and the following work-up procedure is simple, with the ionicliquidcatalystreusable for at least five cycles at a high catalytic activity level. In addition, the
离子液体,即[甜菜碱][H 2 PO 4 ],被发现是无溶剂条件下xanthen-9-ol与不同亲核试剂直接取代反应的有效催化剂。该催化体系易于操作,后续后处理程序简单,离子液体催化剂可在高催化活性水平下重复使用至少五个循环。此外,离子液体制备简单,原料廉价,生物相容性好。因此,我们的研究提出了一种有趣且可持续的直接替代酒精的方案。