113976-79-7Relevant articles and documents
Synthesis of 4-Substituted-3-alkoxy-3-cyclobutene-1,2-diones
Reed, Michael W.,Pollart, Daniel J.,Perri, Steven T.,Foland, Lafayette D.,Moore, Harold W.
, p. 2477 - 2482 (2007/10/02)
4-Substituted-3-alkoxycyclobutenediones 3 were obtained from dialkoxycyclobutenediones (dialkyl squarates) 1 by the addition of organolithium reagents followed by hydrolysis of the resulting hydroxycyclobutenone 2.A particularly useful one-pot procedure i