Synthesis with Perfect Atom Economy: Generation of Diazo Ketones by 1,3-Dipolar Cycloaddition of Nitrous Oxide at Cyclic Alkynes under Mild Conditions
作者:Klaus Banert、Oliver Plefka
DOI:10.1002/anie.201101326
日期:2011.6.27
A cascade of five steps, transforms cyclooctynes in the presence of nucleophiles NuH and nitrousoxide, into the depicted products (see scheme). In another example, nitrousoxide was added at a cycloalkyne at −25 °C to generate the corresponding diazoketone. In both cases, all three atoms of nitrousoxide were incorporated into the products.