54640-04-9Relevant articles and documents
Overcoming the Deallylation Problem: Palladium(II)-Catalyzed Chemo-, Regio-, and Stereoselective Allylic Oxidation of Aryl Allyl Ether, Amine, and Amino Acids
Begam, Hasina Mamataj,Jana, Ranjan,Manna, Kartic,Samanta, Krishanu
supporting information, p. 7443 - 7449 (2020/10/09)
We report herein a Pd(II)/bis-sulfoxide-catalyzed intramolecular allylic C-H acetoxylation of aryl allyl ether, amine, and amino acids with the retention of a labile allyl moiety. Mechanistically, the reaction proceeds through a distinct double-bond isomerization from the allylic to the vinylic position followed by intramolecular carboxypalladation and the β-hydride elimination pathway. For the first time, C-H oxidation of N-allyl-protected amino acids to furnish five-membered heterocycles through 1,3-syn-addition is established with excellent diastereoselectivity.
A NEW MACROCYCLIC DIACID WITH BALANCED CONFORMATIONAL FLEXIBILITY AND PREORGANIZATION
Gennari, Cesare,Molinari, Francesco,Bartoletti, Marcella,Potenza, Donatella
, p. 279 - 282 (2007/10/02)
Macrocyclic diacid 1 was designed and synthesized as an effective catalyst for hemiacetal cleavage.Molecular modelling studies (using Clark Still's MacroModel) show that 1 has many accessible low energy conformations with various degrees of carboxyl group
New compounds: convenient selective esterification of aromatic carboxylic acids bearing other reactive groups using a boron trifluoride etherate alcohol reagent
Kadaba
, p. 1333 - 1335 (2007/10/05)
-