N-Chloroformylimidazolidinone Enolates as 1,3-Dipolar Reagents for the Stereoselective Synthesis of 3,4-Dihydroisoquinolones
H Abas, MM Amer, O Olaizola, J Clayden - Organic letters, 2019 - ACS Publications
N-Chloroformyl imidazolidinone derivatives of enantiopure amino acids may be
deprotonated to give remarkably well-behaved enolates with both nucleophilic and …
deprotonated to give remarkably well-behaved enolates with both nucleophilic and …
Substituted dihydroisoquinolinones by iodide-promoted cyclocarbonylation of aromatic α-amino acids
MM Amer, AC Carrasco, DJ Leonard, JW Ward… - Organic …, 2018 - ACS Publications
Imidazolidinone derivatives of a range of aromatic α-amino acids, on treatment with
phosgene and potassium iodide, undergo a mild Bischler–Napieralski-style …
phosgene and potassium iodide, undergo a mild Bischler–Napieralski-style …
Diastereoselective alkylation of homochiral 1, 2, 3, 4-tetrahydroisoquinolin-3-one. A potential route to enantiomerically pure 4-substituted tetrahydroisoquinolines
N Philippe, V Levacher, G Dupas, J Duflos… - Tetrahedron …, 1996 - Elsevier
Enantiomerically pure 1, 4-dihydroisoquinolin-3-one 1 was prepared in four steps with an
overall yield of 60%. Alkylation of the corresponding lactam enolate has been studied and …
overall yield of 60%. Alkylation of the corresponding lactam enolate has been studied and …
Highly Diastereoselective [3+2] Cycloadditions between Nonracemic p‐Tolylsulfinimines and Iminoesters: An Efficient Entry to Enantiopure Imidazolidines and Vicinal …
A Viso, R Fernández de la Pradilla… - … A European Journal, 2003 - Wiley Online Library
A new procedure for the asymmetric synthesis of imidazolidines and vicinal diamines is
reported. The 1, 3‐dipolar cycloaddition between nonracemic p‐tolylsulfinimines and …
reported. The 1, 3‐dipolar cycloaddition between nonracemic p‐tolylsulfinimines and …
Asymmetric synthesis of 3, 5-disubstituted indolizidines by intermolecular addition of an allylsilane on an N-acyliminium ion
E Conchon, Y Gelas-Mialhe, R Remuson - Tetrahedron: Asymmetry, 2006 - Elsevier
A diastereoselective synthesis of 3, 5-disubstituted indolizidines based on an intermolecular
addition of an allylsilane on an acyliminium ion derived from (S)-pyroglutamic acid is …
addition of an allylsilane on an acyliminium ion derived from (S)-pyroglutamic acid is …
Two-Component Method to Enantiopure Quinolizidinones and Indolizidinones. Total Synthesis of (−)-Lasubine II
D Ma, W Zhu - Organic Letters, 2001 - ACS Publications
The reaction of iodides 1 and enantiopure β-amino esters 2 mediated by potassium
carbonate in acetonitrile at 65° C provides quinolizidinones or indolizidinones 3, together …
carbonate in acetonitrile at 65° C provides quinolizidinones or indolizidinones 3, together …
Tandem [3 + 2] Cycloaddition/1,4-Addition Reaction of Azomethine Ylides and Aza-o-quinone Methides for Asymmetric Synthesis of Imidazolidines
An enantioselective synthesis of biologically important imidazolidines has been achieved
via a tandem [3+ 2] cycloaddition/1, 4-addition reaction of azomethine ylide and aza-o …
via a tandem [3+ 2] cycloaddition/1, 4-addition reaction of azomethine ylide and aza-o …
Sulfinimine-Mediated Asymmetric Synthesis of 1,3-Disubstituted Tetrahydroisoquinolines: A Stereoselective Synthesis of cis- and trans-6,8-Dimethoxy-1,3-dimethyl …
FA Davis, PK Mohanty, DM Burns… - Organic …, 2000 - ACS Publications
The highly diastereoselective addition of lateral lithiated o-tolunitriles to sulfinimines
followed by treatment of the resulting sulfinamide with MeLi, hydrolysis, and reduction …
followed by treatment of the resulting sulfinamide with MeLi, hydrolysis, and reduction …
A new general method for the asymmetric synthesis of 4-alkyl-3-aryl-1, 2, 3, 4-tetrahydroisoquinolines
JL Vicario, D Badía, E Domínguez… - The Journal of Organic …, 1999 - ACS Publications
A highly enantioselective method for the synthesis of 4-alkyl substituted 1, 2, 3, 4-
tetrahydroisoquinolines is reported. The key step relies on the asymmetric synthesis of α …
tetrahydroisoquinolines is reported. The key step relies on the asymmetric synthesis of α …
Enantioselective synthesis of pyrrolo [2, 1-a] isoquinolones via stereocontrolled N-acyliminium ion cyclisations
E Garcı́a, S Arrasate, A Ardeo, E Lete, N Sotomayor - Tetrahedron Letters, 2001 - Elsevier
Stereocontrolled N-acyliminium ion cyclisation of L-DOPA derived succinimide 5 has been
investigated. Addition of organolithiums to chiral non-racemic 5 yields oxoamides, which are …
investigated. Addition of organolithiums to chiral non-racemic 5 yields oxoamides, which are …