Insertion of an Alkene into an Ester: Intramolecular Oxyacylation Reaction of Alkenes through Acyl CO Bond Activation
作者:Giang T. Hoang、Venkata Jaganmohan Reddy、Huy H. K. Nguyen、Christopher J. Douglas
DOI:10.1002/anie.201005767
日期:2011.2.18
Atom economy and esters: compatible now! The first catalytic insertion of a CC bond into an acyl CO bond was achieved using rhodium catalysts (see scheme). The products are β‐alkoxy ketones with a fully substituted carbon center. Quinoline chelating groups were employed to stabilize the Rh‐alkoxide intermediate.
Development and Mechanistic Study of Quinoline-Directed Acyl C–O Bond Activation and Alkene Oxyacylation Reactions
作者:Giang T. Hoang、Dylan J. Walsh、Kathryn A. McGarry、Constance B. Anderson、Christopher J. Douglas
DOI:10.1021/acs.joc.6b03011
日期:2017.3.17
acyl substituent across an alkene, oxyacylation of alkenes, using rhodium catalyzed C–O bond activation of an 8-quinolinyl ester is described. Our unsuccessful attempts at intramolecular carboacylation of ketones via C–C bond activation ultimately informed our choice to pursue and develop the intramolecular oxyacylation of alkenes via quinoline-directed C–O bond activation. We provide a full account
The Claisen rearrangement of allyl phenyl ethers with exceptionally bulky, oxygenophilic methylaluminum bis(4-bromo-2,6-di-tert-butylphenoxide) (reagent A) is found to exhibit an unusual behavior not observable in the ordinary thermal and Lewis acid-induced rearrangement.