ChemInform Abstract: Strong Base‐ or Acid‐Mediated Chemoselectivity Shifts in the Synthesis of 2H‐Chromene or Coumarin Derivatives from Common Baylis‐Hillman Adducts. Issue 42 (October 2015) - Faridoon, Faridoon; Olomola, Temitope O.; Tukulula, Matshawandile; Klein, Rosalyn; Kaye, Perry T.