5866-20-6Relevant articles and documents
Catalytic carbonylation of β-lactones to succinic anhydrides
Getzler, Yutan D. Y. L.,Kundnani, Vinod,Lobkovsky, Emil B.,Coates, Geoffrey W.
, p. 6842 - 6843 (2004)
A well-defined,highly active and selective catalyst for the synthesis of succinic anhydrides from CO and β-lactones is reported. At 200 psi of CO, the catalyst [(N,N′-bis(3,5-di-tert-butylsalicylidene)phenylenediamino)Al(THF)2][Co(CO)4] carbonylates β-propiolactones to succinic anhydrides in high yield. (R)-β-Butyrolactone is carbonylated to (S)-methylsuccinic anhydride with clean inversion of stereochemistry, while cis-2,3-dimethyl-β-propiolactone yields exclusively trans-2,3-dimethylsuccinic anhydride. These data are consistent with a mechanism involving nucleophilic attack by [Co(CO)4]- on the β carbon of the lactone, followed by CO insertion and anhydride formation. Copyright
AN IMPROVED PROCEDURE FOR THE PREPARATION AND RESOLUTION OF DL-2,3-DIMETHYLSUCCINIC ACID
Sutton, Scott C.,Nantz, Michael H.,Hitchcock, Shawn R.
, p. 39 - 44 (2007/10/03)
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