Structures of Some Aliphatic Monoterpenoids Isolated from the Essential Oil of Ledum palustre L..
作者:Max von Schantz、Karl-Gustav Widén、Raimo Hiltunen、Steinar Husebye、P. Klæboe、Carl-Gunnar Swahn
DOI:10.3891/acta.chem.scand.27-0551
日期:——
New Metal-Free One-Pot Synthesis of Substituted Allenes from Enones
作者:Meng Tang、Chun-An Fan、Fu-Min Zhang、Yong-Qiang Tu、Wen-Xue Zhang、Ai-Xia Wang
DOI:10.1021/ol802445p
日期:2008.12.18
A new metal-free, one-pot synthesis of substituted allenes from enones was discovered for the first time, in which a tertiary amine as a base was found to be an effective promoter in such novel transformations. The present synthetic protocol proceeded readily with high compatibility of sensitive functional groups, and it provides a new efficient way to access a series of synthetically important allenes