5942-96-1Relevant articles and documents
Organocatalytic [10+4] cycloadditions for the synthesis of functionalised benzo[a]azulenes
Giardinetti, Maxime,Jessen, Nicolaj Inunnguaq,Christensen, Mette Louise,J?rgensen, Karl Anker
supporting information, p. 202 - 205 (2019/01/04)
A direct and mild strategy for the synthesis of benzo[a]azulenes based on an organocatalytic [10+4] cycloaddition reaction is described. The strategy enables a diversity-oriented approach for the synthesis of various poly-functionalised azulenes from easily accessible starting materials.
A novel and concise synthesis of (±) 2-epi-Validamine
Afarinkia, Kamyar,Mahmood, Farzana
, p. 3129 - 3140 (2007/10/03)
(±) 2-epi-Validamine has been synthesized in five steps by the chemical manipulation of the bicyclic lactone cycloadduct of ethyl coumalate and vinylene carbonate.
Reactions of Carboxylic Acids with "Phosphonium Anhydrides"
Hendrickson, James B.,Hussoin, Md. Sajjat
, p. 1144 - 1149 (2007/10/02)
General considerations are outlined for a reagent to extract oxygen from organic molecules by an equivalent of dehydration.Reagents, (R3P+)2O, 2OTf-, were created for the purpose and subjected to a preliminary study.They were found to convert carboxylic acids readily and rapidly to anhydrides, esters, amides, amidines, benzimidazoles, and cyclic aryl ketones in good yields.