A Modular Strategy for the Synthesis of Macrocycles and Medium-Sized Rings via Cyclization/Ring Expansion Cascade Reactions
作者:Illya Zalessky、Jack M. Wootton、Jerry K. F. Tam、Dominic E. Spurling、William C. Glover-Humphreys、James R. Donald、Will E. Orukotan、Lee C. Duff、Ben J. Knapper、Adrian C. Whitwood、Theo F. N. Tanner、Afjal H. Miah、Jason M. Lynam、William P. Unsworth
DOI:10.1021/jacs.4c00659
日期:2024.2.28
and medium-sized rings are important in many scientific fields and technologies but are hard to make using current methods, especially on a large scale. Outlined herein is a strategy by which functionalized macrocycles and medium-sized rings can be prepared using cyclization/ringexpansion (CRE) cascade reactions, without resorting to high dilution conditions. CRE cascade reactions are designed to operate
Abstract PtCl2-catalyzed cyclization of o-diethynylbenzene derivatives bearing a hydroxyethyl group yielded naphthofuran derivatives by initial intramolecular cyclization of the hydroxy group to an activated ethynyl group followed by attack of the second ethynyl group to a vinylplatinum intermediate. When the ethynyl terminal is substituted by a hydroxypropyl group, not only homologous naphthodihydropyran