The unusual course of the high-pressure reaction of 1,10-diaza-[18]-crown-6 with α,ω-diiodo ethers
作者:Aldona Tarnowska、Piotr Tarnowski、Janusz Jurczak
DOI:10.1016/j.tetlet.2004.11.014
日期:2004.12
Simple 1,10-diaza-[18]-crown-6 reacts smoothly with di(2-indoethyl)ether under high-pressure (10kbar) to give a bis-quaternary spiro salt as a major product, whereas the analogous reaction with 1,8-diiodo-3,6-dioxaoctane leads to the expected precursor of a [2.2.2] cryptand. (C) 2004 Elsevier Ltd. All rights reserved.