1.
Angew Chem Int Ed Engl
; 60(26): 14217, 2021 Jun 21.
Article
in English
| MEDLINE
| ID: mdl-34133075
2.
Chem Commun (Camb)
; (33): 3879-81, 2008 Sep 07.
Article
in English
| MEDLINE
| ID: mdl-18726021
ABSTRACT
(-)-Sparteine directed lithiation of N-Boc-pyrrolidine, alkylation with chloromethylboronate pinacol ester and acid-based deprotection provides homoboroproline HX salt in 94% ee, which is then an efficient enamine-type pyrrolidine catalyst in an asymmetric aldol reaction when neutralised and especially when esterified in situ with a tartrate ester, for example, providing 90% ee of the aldol adduct derived from acetone and p-nitrobenzaldehyde.
Subject(s)
Acids/chemistry , Aldehydes/chemistry , Amines/chemistry , Lewis Acids/chemistry , Catalysis
3.
Angew Chem Int Ed Engl
; 47(14): 2673-6, 2008.
Article
in English
| MEDLINE
| ID: mdl-18306200