Dadiboyena, Sureshbabu One Pot Spiropyrazoline Synthesis via Intramolecular Cyclization/Methylation. [electronic resource] - Tetrahedron letters May 2011 - 2536-2539 p. digital Publication Type: Journal Article ISSN: 0040-4039 Standard No.: 10.1016/j.tetlet.2011.03.004 doi