Synthesis and <i>C</i>-Alkylation of Hindered Aldehyde Enamines
作者:David M. Hodgson、Christopher D. Bray、Nicholas D. Kindon、Nigel J. Reynolds、Steven J. Coote、Joann M. Um、K. N. Houk
DOI:10.1021/jo802016t
日期:2009.2.6
hindered lithium amides with terminal epoxides is described whereby aldehydeenamines are produced via a previously unrecognized reaction pathway. Some of these aldehydeenamines display unprecedented C-alkylation reactivity toward unactivated primary and secondary alkyl halides. For comparison, the reactivity of aldehydeenamines synthesized via a traditional condensation method was examined. C- rather
Deprotonation–electrophile trapping of terminal epoxides
作者:David M. Hodgson、Eirene H. M. Kirton、Steven M. Miles、Stéphanie L. M. Norsikian、Nigel J. Reynolds、Steven J. Coote
DOI:10.1039/b502888d
日期:——
Organolithium-induced deprotonation of terminal epoxides in the presence of appropriate diamine ligands allows trapping with a range of electrophiles, yielding functionalised di- and tri-substituted epoxides in good yields and with control of stereochemistry at the epoxide.
Enamines from Terminal Epoxides and Hindered Lithium Amides
作者:David M. Hodgson、Christopher D. Bray、Nicholas D. Kindon
DOI:10.1021/ja031770o
日期:2004.6.1
A new reactivity mode of lithium amides with epoxides leads to hindered enamines. The reaction of some of these enamines with unactivated primary and secondary alkyl halides is described, which expands the range of electrophiles that one can use in the synthesis of mono-alkylated aldehydes.