Xin Cheng and Shengming Ma
Chem. Commun., 2009, 4263-4265
DOI:
10.1039/B903634B,
Communication
2,3-Dihydro-1H-pyrazoles were highly selectively synthesized via the Pd(0)-catalyzed coupling-cyclization reaction of 4-non-substituted 2-substituted 2,3-allenyl