ChemInform Abstract: Pyridinium Ylide Assisted Highly Stereoselective One‐Pot Synthesis of trans‐2‐(4‐Chlorobenzoyl)‐3‐aryl‐spiro [cyclopropane‐1, 2′‐inden]‐1′, 3′‐diones and Their Antimicrobial and Nematicidal Activities. Issue 36 (September 2015)