Highly Regioselective Propargylation/Allenylation of Organolanthanum Reagents with Aldehydes
作者:Xue-Lin Dai、Jingdi Ran、Thayalan Rajeshkumar、Zhengping Xu、Shanshan Liu、Zongchao Lv、Laurent Maron、Yi-Hung Chen
DOI:10.1021/acs.orglett.3c00824
日期:2023.5.5
The metal-mediated propargylation or allenylation of carbonyl compounds is well-adapted to the preparation of homopropargylic or allenylic alcohols, which are multifunctional intermediates in synthetic chemistry. However, the regioselectivity of reactions using propargyl or allenyl metal reagents is difficult to control, owing to the equilibrium between the two species. In our study, propargyl or allenyl
金属介导的羰基化合物炔丙基化或丙二烯基化非常适合制备均炔醇或丙二醇,它们是合成化学中的多功能中间体。然而,由于两种物质之间的平衡,使用炔丙基或联烯基金属试剂的反应的区域选择性难以控制。在我们的研究中,使用三甲基甲硅烷基丙炔或 prop-1-yn-1-ylbenzene 底物制备炔丙基或联烯基有机镧试剂。用醛处理有机镧试剂分别产生区域选择性产物。该研究提供了对稀土金属试剂的结构特异性和特殊化学选择性的更好理解。