A chemoselective deprotection of trimethylsilyl acetylenes catalyzed by silver salts
摘要:
Trimethylsilyl acetylenes can be selectively deprotected in the presence of a catalytic amount of silver salts. AgNO3 and AgOTf proved to be the most effective catalyst in a mixture of methanol, water and dichloromethane. Other functional groups, and especially silyl ethers, are not affected in these conditions. (c) 2005 Elsevier Ltd. All rights reserved.
New lactone synthesis using a chromium carbene complex
作者:Taro Ishibashi、Nagisa Ochifuji、Miwako Mori
DOI:10.1016/0040-4039(96)01338-x
日期:1996.8
A new lactone synthesis was developed using the Fischer chromiumcarbenecomplex. The lactone was formed from an alkyne bearing a hydroxyl or silyloxyl group in a tether, along with carbene carbon and carbon monoxide of the chromiumcarbenecomplex. Using this procedure, (+)-blastmycinone and (+)-antimycinone were synthesized from (S)-ethyl lactate in short steps.
A chemoselective deprotection of trimethylsilyl acetylenes catalyzed by silver salts
作者:Alban Orsini、Aurélien Vitérisi、Anne Bodlenner、Jean-Marc Weibel、Patrick Pale
DOI:10.1016/j.tetlet.2005.02.017
日期:2005.3
Trimethylsilyl acetylenes can be selectively deprotected in the presence of a catalytic amount of silver salts. AgNO3 and AgOTf proved to be the most effective catalyst in a mixture of methanol, water and dichloromethane. Other functional groups, and especially silyl ethers, are not affected in these conditions. (c) 2005 Elsevier Ltd. All rights reserved.
Construction of trans-fused polycyclic ethers: methodology for the brevetoxins