+++Thanks_CommanderL_1 article from RSC

[pendyala123]

Condensed thiophen ring systems. Part XI. Synthesis of 2-aryl[1]-benzothieno[3,2-c]pyrazoles and 2-aryl[1]benzothieno[2,3-c]pyrazoles
K. E. Chippendale, B. Iddon and H. Suschitzky
J. Chem. Soc., Perkin Trans. 1, 1973, 129-133

DOI:

http://dx.doi.org/10.1039/P19730000129

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http://pubs.rsc.org/en/content/articlelanding/1973/p1/p19730000125#!divAbstract

[Commander L]