Synfacts 2006(6): 0552-0552  
DOI: 10.1055/s-2006-934506
Synthesis of Heterocycles
© Georg Thieme Verlag Stuttgart · New York

Pictet-Spengler Synthesis of Thiazolo- and Pyrazolo-quinolines

Contributor(s): Victor Snieckus, Todd Macklin
S. Duggineni, D. Sawant, B. Saha, B. Kundu*
Central Drug Research Institute, Lucknow, India
Further Information

Publication History

Publication Date:
19 May 2006 (online)

Significance

A new Pictet-Spengler cyclization affording substituted thiazolo- and pyrazolo-quinolines is reported. The reaction proceeds under mildly acidic conditions in good overall yields from precursors conveniently prepared by classical (e.g., Hantzsch) methods.