176536-24-6Relevant articles and documents
Synthesis of Weinreb amides using diboronic acid anhydride-catalyzed dehydrative amidation of carboxylic acids
Shimada, Naoyuki,Takahashi, Naoya,Ohse, Naoki,Koshizuka, Masayoshi,Makino, Kazuishi
, p. 13145 - 13148 (2020/11/09)
The first successful example of the direct synthesis of Weinreb amides using catalytic hydroxy-directed dehydrative amidation of carboxylic acids using the diboronic acid anhydride catalyst is described. The methodology is applicable to the concise syntheses of eight α-hydroxyketone natural products, namely, sattabacin, 4-hydroxy sattabacin, kurasoins A and B, soraphinols A and B, and circumcins B and C.
Operationally simple, efficient, and diastereoselective synthesis of cis-2,6-disubstituted-4-methylene tetrahydropyrans catalyzed by triflic acid
Puglisi, Alessandra,Lee, Ai-Lan,Schrock, Richard R.,Hoveyda, Amir H.
, p. 1871 - 1874 (2008/02/03)
A highly efficient (0.01 mol % of TfOH), operationally simple (room temperature, inexpensive, and commercially available catalyst), and diastereoselective (up to >98% de) method for Bronsted acid-catalyzed reaction of enol ethers to form cis-2,6-disubstit
