An asymmetric pericyclic cascade approach to 3-alkyl-3-aryloxindoles: generality, applications and mechanistic investigations
作者:Edward Richmond、Kenneth B. Ling、Nicolas Duguet、Lois B. Manton、Nihan Çelebi-Ölçüm、Yu-Hong Lam、Sezen Alsancak、Alexandra M. Z. Slawin、K. N. Houk、Andrew D. Smith
DOI:10.1039/c4ob02526a
日期:——
The reaction of l-serine derived N-arylnitrones with alkylarylketenes generates 3-alkyl-3-aryloxindoles in good yields and excellent enantioselectivities.
Catalytic Enantioselective Synthesis of a 3-Aryl-3-benzyloxindole (=3-Aryl-3-benzyl-1,3-dihydro-2<i>H</i>-indol-2-one) Exhibiting Antitumor Activity
作者:Dmitry Katayev、E. Peter Kündig
DOI:10.1002/hlca.201200477
日期:2012.11
chiral N‐heterocyclic carbene ligand is the key step in the first catalyticsynthesis of (3R)‐6‐chloro‐3‐(3‐chlorobenzyl)‐1,3‐dihydro‐3‐(3‐methoxyphenyl)‐2H‐indol‐2‐one ((R)‐5). This oxindole, in racemic form, had been shown previously to be an anticancer agent. (R)‐5 was obtained with an overall yield of 45% and with 96% enantioselectivity.