Take the strain: Despite extreme ring strain and reactivity, the heterocycles 2, which are easily obtained from azides 1 and detectable by NMR spectroscopy, can be converted stereoselectively by novel addition and cycloaddition reactions.
Trotz extremer Ringspannung und Reaktivität lassen sich die NMR‐spektroskopisch beobachtbaren und aus den Aziden 1 leicht zugänglichen Heterocyclen 2 in neuartigen Additions‐ und Cycloadditionsreaktionen stereoselektiv umsetzen.
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