Synthesis of the Privileged 8-Arylmenthol Class by Radical Arylation of Isopulegol
作者:Steven W. M. Crossley、Ruben M. Martinez、Sebastián Guevara-Zuluaga、Ryan A. Shenvi
DOI:10.1021/acs.orglett.6b01047
日期:2016.6.3
Friedel–Crafts reaction in the derivatization of the inexpensive monoterpene isopulegol. A variety of readily prepared aryl and heteroaryl sulfonates undergo a formal hydroarylation to form 8-arylmenthols, privileged scaffolds for asymmetric synthesis, as typified by 8-phenylmenthol. High stereoselectivity is observed in related systems. This use of HAT significantly extends the chiral pool from the inexpensive
氢原子转移(HAT)避免了廉价的单萜异胡薄荷醇的衍生化中不利的Friedel-Crafts反应。各种易于制备的芳基和杂芳基磺酸盐经过正式的氢芳基化反应生成8-芳基薄荷醇,这是用于不对称合成的有优势的支架,以8-苯基薄荷醇为代表。在相关系统中观察到高立体选择性。HAT的这种使用极大地扩展了廉价的单萜异胡薄荷醇的手性库。