A new protocol for benzoannulation by double Claisen rearrangement and ring-closing metathesis reactions as key steps
摘要:
A new methodology for benzoannulation has been developed by using double Claisen rearrangement followed by a one-pot ring-closing metathesis and DDQ oxidation sequence. (C) 2004 Published by Elsevier Ltd.
A fast, efficient and environmentally benign solvent-free procedure has been developed for microwave-assisted Claisen rearrangement on a silicagel support. Various bis-allyl ketones were prepared using this protocol.
Formation of Arenesvia Diallylarenes: Strategic Utilization of Suzuki–Miyaura Cross-Coupling, Claisen Rearrangement and Ring-Closing Metathesis
作者:Sambasivarao Kotha、Vrajesh R. Shah、Kalyaneswar Mandal
DOI:10.1002/adsc.200600469
日期:2007.5.7
benzoannulation are reported. The first strategy is based on the Suzuki–Miyauracross-coupling reaction. To this end, various ortho-diallylbenzene derivatives were prepared from the corrresponding diiodo derivatives by an allylation strategy using an allylboronate as coupling partner. These diallyl derivatives were subjected to a ring-closingmetathesis (RCM) and one-pot dichlorodicyanoquinone (DDQ) oxidation
A new protocol for benzoannulation by double Claisen rearrangement and ring-closing metathesis reactions as key steps
作者:Sambasivarao Kotha、Kalyaneswar Mandal
DOI:10.1016/j.tetlet.2004.01.149
日期:2004.3
A new methodology for benzoannulation has been developed by using double Claisen rearrangement followed by a one-pot ring-closing metathesis and DDQ oxidation sequence. (C) 2004 Published by Elsevier Ltd.