Metal-Catalyzed Regioselective Oxy-Functionalization of Internal Alkynes: An Entry into Ketones, Acetals, and Spiroketals
作者:Bo Liu、Jef K. De Brabander
DOI:10.1021/ol0619819
日期:2006.10.1
text] Platinum(II) and an unusual cationic gold(I) complex were identified as mild catalysts for the room temperature cycloisomerization or tandem hydroalkoxylation/acetal formation of unactivated internal alkynols. Under the appropriate conditions, 5-endo, 5-exo, 6-endo, and 6-exo cycloisomerization modes are all available.
[反应:见正文]铂(II)和一种不寻常的阳离子金(I)络合物被确定为室温环异构化或未活化内部炔醇的串联加氢烷氧基化/缩醛形成的温和催化剂。在适当的条件下,可以使用5-endo,5-exo,6-endo和6-exo环异构化模式。