147168-89-6Relevant articles and documents
Asymmetric aldol reactions: A novel model for switching between chelation- and non-chelation-controlled aldol reactions
Yan, Tu-Hsin,Tan, Chang-Wei,Lee, Hui-Chun,Lo, Hua-Chi,Huang, Tzung-Yu
, p. 2613 - 2621 (1993)
A new camphor-based N-propionyloxazolidinethione provides remarkable levels of asymmetric induction for both chelation- and non-chelation-controlled aldol processes. While the aldol condensation of the derived di-n-butylboryl enolate with various aldehyde
Enantioselective addition of dialkylzinc to aromatic aldimines mediated by camphor-derived chiral β-amino alcohols
Huang, Wei-Ming,Uang, Biing-Jiun
supporting information, p. 998 - 1003 (2015/03/31)
The enantioselective addition of diethylzinc or dimethylzinc to N-(diphenylphosphinoyl)imines mediated by 1 or 2 could be achieved in high yields (70-97%) and enantioselectivities (85-98% ee). The catalytic loading of 1 or 2a could be reduced to 10 mol% f
A new chiral oxazoline derived from camphor and its conversion to (R)-2-methylalkanoic acids
Chandrasekhar, Sosale,Kausar, Amina
, p. 2249 - 2253 (2007/10/03)
(1S,5R,7R)-(-)-10,10-Dimethyl-3-ethyl-4-oxa-2-azatricyclo[5.2.1.01,5]dec-2-ene 2 was prepared in 95% yield from (1S)-1-amino-2-exo-hydroxyapocamphane 1. The chiral oxazoline could be alkylated (LDA/THF/-78°C/RX, RX=ethyl, n-propyl, n-butyl iodides or benzyl bromide) to 3 in 95% yield and >95% diastereoselectivity, and the products hydrolysed to (R)-2-methylalkanoic acids 4 (43-47% yield, 93-98% e.e.). Copyright (C) 2000 Elsevier Science Ltd.