[3 + 2]-Cycloadditions of nitrile ylides after photoactivion of vinyl azides under flow conditions

نویسندگان

  • Stephan Cludius-Brandt
  • Lukas Kupracz
  • Andreas Kirschning
چکیده

The photodenitrogenation of vinyl azides to 2H-azirines by using a photoflow reactor is reported and compared with thermal formation of 2H-azirines. Photochemically, the ring of the 2H-azirines was opened to yield the nitrile ylides, which underwent a [3 + 2]-cycloaddition with 1,3-dipolarophiles. When diisopropyl azodicarboxylate serves as the dipolarophile, 1,3,4-triazoles become directly accessible starting from the corresponding vinyl azide.

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عنوان ژورنال:

دوره 9  شماره 

صفحات  -

تاریخ انتشار 2013