Synthesis of (Z) -2 - (pyridin-4-Yl) Methylene) - [1,3] Dioxolo [4,5-F]-Indolin-3-One and (Z) -2 - (pyridin- 2 -Yl) Methylene) - [1,3] Dioxolo [4,5-F]-Indolin-3-One, Rhodium Coordination, and Their Catalytic Activity in the Hydroformylation of Allyl Hom. Rev. Invest. Univ. Quindío 2013, 24 (1), 37-48.