Silver(I)-Catalyzed Novel Cascade Cyclization Reactions: Incorporation of Allenes into the Isochromenes
作者:Nitin T. Patil、Nirmal K. Pahadi、Yoshinori Yamamoto
DOI:10.1021/jo051524q
日期:2005.11.1
The silver(I)-catalyzed reaction of alkynones with alcohols represents a general tool for the synthesis of 1-allenyl isochromenes. The reaction most probably proceeds via the formation of benzopyrylium cation, which subsequently undergoes nucleophilic attack of an alcohol to give the annulation products.
炔酮与醇的银(I)催化反应代表了合成1-烯基异色酮的通用工具。该反应最有可能通过形成苯并吡啶阳离子来进行,该苯并吡啶阳离子随后经受醇的亲核攻击以得到环合产物。