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1 model involves nucleophilic catalysis by the cinchona alkaloid.
2 gs (X-ray) were obtained via modification of Cinchona alkaloids.
3 ated chiral cations derived from quaternized cinchona alkaloids.
4 echanistic studies of reactions catalyzed by cinchona alkaloids.
5  insight into the conformational behavior of cinchona alkaloids.
6 laced from the surface by any of those other cinchona alkaloids.
7 enantiomerically pure forms resemble 9-amino-Cinchona alkaloids.
8  with naturally occurring pseudoenantiomeric Cinchona alkaloids.
9 erivatives and enones in the presence of the Cinchona alkaloid amine.
10 nditions with 10 mol% of a readily available cinchona alkaloid ammonium catalyst.
11 ities comparable with those reported for the Cinchona alkaloid ammonium salts derivatives (83-96% ee)
12            The zwitterionic adduct between a cinchona alkaloid and ketone is adsorbed on Pt through t
13                                              Cinchona alkaloids and their derivatives are widely used
14 mperature adsorption of four closely related cinchona alkaloids and three reference quinoline-based c
15 ia include glycoprotein IIb/IIIa inhibitors, cinchona alkaloids, antibiotics, anticonvulsants, and he
16    In particular, sulfonamide derivatives of cinchona alkaloids are highly enantioselective desymmetr
17 ide, using a catalytic amount of a silylated cinchona alkaloid as a source of chirality.
18 iomers of a product using pseudoenantiomeric cinchona alkaloids as catalysts streamlining the synthes
19 rt the discovery of novel N,N'-disubstituted cinchona alkaloids as efficient phase-transfer catalysts
20                                        Using cinchona alkaloid-based catalysts, high selectivity has
21 alization/oxa-Michael addition cascade using cinchona alkaloid-based chiral bifunctional amino-squara
22                 In comparison to traditional cinchona-alkaloid-based phase-transfer catalysts, these
23                        Herein, we disclose a cinchona-alkaloid-based squaramide-catalyzed intermolecu
24  discovery that, upon proper modification, a cinchona alkaloid bearing a thiourea functionality at 6'
25 rs can be prepared by thiourea or squaramide cinchona alkaloid bifunctional organocatalysts with the
26 is demonstrated for noncovalent complexes of cinchona alkaloid carbamate chiral selectors with N-dini
27 ogen bonding transition state (TS) model for cinchona alkaloid catalysis that we recently showed to b
28                                          The cinchona alkaloid catalyst benzoylquinine (BQ) mediates
29  and hydroperoxides and an easily accessible cinchona alkaloid catalyst, this novel reaction will ope
30        The reaction requires 10 mol % of the cinchona alkaloid catalyst, which serves as a general ba
31 reported by MacMillan, which uses a modified cinchona alkaloid catalyst.
32 oles with imines catalyzed by a bifunctional cinchona alkaloid catalyst.
33                                 C-9 arylated cinchona alkaloid catalysts have been found to be consid
34 ic anhydrides (AMMA) catalyzed by a class of cinchona alkaloid catalysts involves an oxyanion hole co
35      Predicted enantioselectivities of three cinchona alkaloid catalysts, namely DHQD-PHN, DHQD-MEQ,
36 n of the reactivity of acid chlorides, using cinchona alkaloid catalysts, results in chiral alpha,bet
37      Wynberg's report from 1977 that natural cinchona alkaloids catalyze the asymmetric conjugate add
38 First, our kinetic studies indicate that the cinchona alkaloid-catalyzed alcoholysis proceeds by a ge
39  dioxolanediones was realized via a modified cinchona alkaloid-catalyzed alcoholytic opening of the d
40 antioenriched dihydropyrimidone core was the Cinchona alkaloid-catalyzed Mannich reaction of beta-ket
41                  The highly enantioselective cinchona alkaloid-catalyzed Mannich reaction of dicarbon
42                                              Cinchona alkaloid-catalyzed reaction of ethyl glyoxylate
43 kyl-9-BBN derivatives in the presence of the Cinchona alkaloid, cinchonidine, and base.
44 performance achieved by the use of a proline cinchona alkaloid conjugate designed in a de novo fashio
45 imal catalytic system was determined to be a cinchona alkaloid derivative (TMS-quinine or Me-quinidin
46  conformation studies with a designed, rigid cinchona alkaloid derivative as a probe.
47                      Herein, we identified a cinchona alkaloid derivative containing urea (C1), which
48          The reaction is simply catalyzed by cinchona alkaloid derivatives affording the final alkyla
49  alcohol dichlorination catalyzed by dimeric cinchona alkaloid derivatives and employing aryl iododic
50 e, commercially available acid halides using cinchona alkaloid derivatives as catalysts and polychlor
51                                       Chiral cinchona alkaloid derivatives work best when paired with
52        The reactions herein are catalyzed by cinchona alkaloid derivatives, with the best performance
53  self-assembled in situ from amino acids and cinchona alkaloid derivatives.
54  of Lewis acids were screened in tandem with cinchona alkaloid derivatives; surprisingly, trans-(Ph(3
55                                          The Cinchona alkaloid derived chiral ammonium salt developed
56 fur center were achieved with an inexpensive cinchona alkaloid derived PTC.
57 saturated pyrazolones in the presence of the cinchona-alkaloid derived hydrogen-bonding catalyst prov
58 ic induction in aldol reactions catalyzed by cinchona alkaloid-derived amines, and chiral vicinal dia
59 t matching effect between the chirality of a cinchona alkaloid-derived aminophosphine ligand for the
60 ed heterocycles can also be prepared using a Cinchona alkaloid-derived bifunctional organocatalyst fo
61     Furthermore, the active conformer of the cinchona alkaloid-derived catalyst DHQD-PHN was clarifie
62 terization of the active conformation of the cinchona alkaloid-derived catalyst for a desymmetrizatio
63 mization of N-acyl-1,2-aminoalcohols using a cinchona alkaloid-derived catalyst that operates through
64     Following single electron oxidation of a cinchona alkaloid-derived catalyst, enantiodetermining h
65  greater than that of a widely used thiourea cinchona alkaloid-derived catalyst.
66 tracarboxylate dimer, and its two associated cinchona alkaloid-derived cations.
67 ystematic structural "knockout" study on the cinchona alkaloid-derived chiral cation to elucidate whi
68 anionic Rh complex that is ion-paired with a Cinchona alkaloid-derived chiral cation.
69 h(II, II) complexes that are ion-paired with cinchona alkaloid-derived chiral cations.
70 Du Bois' esp ligand that are associated with cinchona alkaloid-derived chiral cations.
71                                  A series of Cinchona alkaloid-derived dimers were obtained in high y
72                                              Cinchona alkaloid-derived organocatalysts as Bronsted ba
73 ines and enones under the catalysis of a new cinchona alkaloid-derived phase-transfer catalyst.
74 s reaction, disclosed by List et al. using a cinchona alkaloid-derived primary amine (cinchona amine)
75                                        Using cinchona alkaloid-derived primary amines as catalysts an
76 -fluorination of cyclic ketones catalyzed by cinchona alkaloid-derived primary amines is determined w
77 th phenylglyoxal hydrates were realized with cinchona alkaloid-derived thiourea catalysts.
78                                          The cinchona alkaloid-derived urea-catalyzed asymmetric conj
79                                            A cinchona-alkaloid-derived chiral primary-amine-catalyzed
80           Various structural elements of the Cinchona alkaloid dimers are interrogated to establish a
81 eveloped catalysts, readily derived from the Cinchona alkaloid family of natural products, which can
82 es have been enantioselectively catalyzed by Cinchona alkaloids functionalized with a hydrogen bond d
83                      The 9-amino(9-deoxy)epi cinchona alkaloids have expanded the synthetic potential
84 f solvent-induced conformational behavior of cinchona alkaloids in their reactivity.
85  modification the conformational behavior of cinchona alkaloids in various solvents can be convenient
86                                The series of Cinchona alkaloids includes known C6' (thio)urea and sul
87 Reaction of dimethylsulfonium methylide with Cinchona alkaloid ketones proceeds with complete diaster
88 vities of reductions of activated ketones on cinchona alkaloid modified platinum is proposed and is s
89 ration of supercoiled plasmid topoisomers on cinchona-alkaloid modified silica-based stationary phase
90                                    The first cinchona-alkaloid-organocatalyzed enantioselective synth
91 alysis via a complex of silver acetate and a cinchona alkaloid, particularly hydroquinine, with compl
92 and quaternary ammonium bromide derived from cinchona alkaloids, provided nonracemic allene derivativ
93 cleophilic catalysis conditions with dimeric cinchona alkaloids, providing excellent enantiocontrol o
94                 We also demonstrate that the cinchona alkaloids quinidine and quinine give rise to pr
95 dings underline the privileged nature of the cinchona alkaloid scaffold and provide insight into how
96 onformational interconversion barrier of the cinchona alkaloid scaffold.
97 ted domino coupling and rearrangement of the Cinchona alkaloid skeleton has been found to occur in th
98 lfa-Michael addition reaction catalyzed by a cinchona alkaloid-squaramide bifunctional organocatalyst
99 sembled from both enantiomers of proline and cinchona alkaloid thiourea derivatives.
100 Os) that are self-assembled from proline and cinchona alkaloid thioureas (such as a quinidine-derived
101                                 Bifunctional Cinchona alkaloid thioureas efficiently catalyze asymmet
102 ndant and nature-derived 9-amino-9-deoxy-epi-cinchona alkaloids to activate ketones as transient seco
103 nitroolefins in the presence of 1-6 mol % of cinchona alkaloid urea derivatives, and provided access
104 nding model, which works for cinchonidine or cinchona alkaloid-urea catalyzed sulfa-Michael addition
105 his dynamic kinetic resolution, the modified cinchona alkaloid was found to serve dual catalytic role
106    The reactions are catalyzed by a modified cinchona alkaloid, which can function as a bifunctional,

 
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