Regioselective functionalization of heterocyclic rings: synthesis and reactions of 1-methyl-2-(trimethylsiloxy)pyrrole and 2-(trimethylsiloxy)thiophene
VinylogousMukaiyama‐type aldolreactions have been catalyzed by a combination of Cu(OTf)2 and readily available C1‐symmetric aminosulfoximines. After a fine‐tuning of the reaction conditions and an optimization of the modularly assembled ligand structure, high stereoselectivities and excellent yields have been achieved in catalyzed reactions involving various electrophile/nucleophile combinations
yielding access to phosphonic γ‐(hydroxyalkyl)butenolides with excellent regio‐, diastereo‐ and enantiocontrol is reported. The simultaneous construction of up to two adjacent quaternary stereogenic centers by a catalytic asymmetric vinylogousMukaiyamaaldolreaction unites biologically and medicinally relevant entities, namely α‐hydroxy phosphonates and γ‐(hydroxyalkyl)butenolides. This is achieved by
Tautomerism of the monohydroxy derivatives of five-membered oxygen, nitrogen and sulfur heterocycles
作者:Brian Capon、Fu Chiu Kwok
DOI:10.1021/ja00196a046
日期:1989.7
Cinetique de cetomisation de divers enols heterocycliques generes par hydrolyse de leurs derives trimethylsilyl. Constantes d'equilibres de la tautometie cetoenolique
Cinetique de cetomisation de divers enols heterocycliques generices par hydrolyse de leurs 衍生出三甲基甲硅烷基。恒定不变的恒等式
FIORENZA, M.;REGINATO, G.;RICCI, A.;TADDEI, M., J. ORG. CHEM., 1984, 49, N 3, 551-553
作者:FIORENZA, M.、REGINATO, G.、RICCI, A.、TADDEI, M.
DOI:——
日期:——
The tautomerism of hydroxy derivatives of five-membered oxygen, nitrogen, and sulfur heterocycles
作者:Brian Capon、Fu-Chiu Kwok
DOI:10.1016/s0040-4039(00)84773-5
日期:1986.1
The unstable enolic tautomers 3-hydroxyfuran, 2- and 3-hydroxythiophene, 3-hydroxy-pyrrole, 3-hydroxy-1-methyl-pyrrole and their benzo-derivatives have been generated in solution and the rate and equilibrium constants for their ketoization determined.