PPh3??catalyzed knoevenagel condensation: A facile synthesis of 5??(1H??indol??3??yl) Meth??ylene)??2, 2??Dimethyl??1, 3??Dioxane??4, 6??dione, and their N??alkyl …
M Venkatanarayana, P Kumar Dubey
Index: Venkatanarayana, Muvvala; Kumar Dubey, Pramod Heteroatom Chemistry, 2012 , vol. 23, # 1 p. 41 - 48
Full Text: HTML
Citation Number: 4
Abstract
Abstract Triphenylphosphine (TPP) has been utilized as a novel and efficient catalyst for the Knoevenagel condensation of indole-3-carboxaldehydes 1 (a–e), 1-methyl-1H-indole-3- carboxaldehydes 4 (a–e), and 1-ethyl-1H-indole-3-carboxaldehydes 6 (a–e) with the active methylene compound, that is, meldrum's acid (2), to afford substituted derivatives 5-((1H- indol-3-yl) methylene)-2, 2-dimethyl-1, 3-dioxane-4, 6-dione 3 (a–e), 2, 2-dimethyl-5-((1- ...
Related Articles:
[Thirupathi; Venkatanarayana; Dubey; Bharathi Kumari Medicinal Chemistry Research, 2014 , vol. 23, # 3 p. 1569 - 1580]
[Thirupathi; Dubey; Kumari, Y. Bharathi Asian Journal of Chemistry, 2013 , vol. 25, # 15 p. 8741 - 8748]