Gold-Catalyzed Regioselective Meyer-Schuster Rearrangement and Ring Expansion Cascade Leading to α-Hydroxy-α-vinylcyclopentanones
作者:Jun-Hyun An、Hokeun Yun、Sunwoong Shin、Seunghoon Shin
DOI:10.1002/adsc.201400569
日期:2014.12.15
AbstractReadily available cyclobutanols having a butyne‐1,4‐diol moiety underwent a sequential regioselective Meyer–Schuster rearrangement and 1,2‐shift, furnishing α‐hydroxy‐α‐vinylcyclopentanones. The reaction mechanism is consistent with the formation of an allenol intermediate that racemizes under the reaction conditions. Subsequent activation of the allenol leads to an enantio‐ and diastereoselective route to this scaffold.magnified image