Helvetica Chimica Acta p. 1825 - 1833 (1992)
Update date:2022-08-03
Topics:
Mloston, Grzegorz
Heimgartner, Heinz
At 0 deg C, 1,3-thiazoles 1 and 2-diazopropane in pentane or MeOH undergo a smooth 1,3-dipolar cycloaddition to give spirocyclic 2,4-dihydro-1,3,4-thiadiazoles 6 (Scheme 3).Elimination of N2 occurs already at 20 deg C, yielding spirocyclic thiiranes 7.At
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(2012)
