81399-60-2Relevant academic research and scientific papers
Stereoselective -olefination of substituted cyclobutenediones by organocatalysis
Beesu, Mallesh,Periasamy, Mariappan
supporting information; experimental part, p. 2834 - 2840 (2012/01/06)
Methods are described for the stereoselective synthesis of alkenyl-substituted cyclobutenediones from alkyl-substituted cyclobutenediones and aldehydes in 70-91% yields using pyrrolidine as catalyst under mild reaction conditions. Georg Thieme Verlag Stut
Reaktionen mit Cyclobutendionen, LX. Umsetzungen von 3-Alkyl-4-phenyl-3-cyclobuten-1,2-dionen mit Carbonylverbindungen
Ried, Walter,Vogl, Manfred
, p. 403 - 413 (2007/10/02)
Condensation of the 3-alkyl-4-phenyl-3-cyclobutene-1,2-diones 1a - c with aromatic aldehydes produces the alkenylcyclobutenediones 2a - r, 3a - i, 4a, b, and 5a, b.Aldol additions lead to 6, 7, and 8.Product 1a can be acylated with 3-methoxy-4-phenylcyclo
