5464-22-2Relevant articles and documents
Reactions of α,β-enones with diazo compounds: Part 3. On the nature of the 1,5-ring closure of α,β-enone ylides
Anac, Olcay,Oezdemir, Ayse Daut,Sezer, Oezkan
, p. 290 - 298 (2003)
Carbonyl ylides arising from ethyl acetodiazoacetate/dimethyl diazomalonate and α,β-enones with mainly s-cis conformations underwent disrotatory cyclization to produce dihydrofuran derivatives. This process proved to be sensitive to steric effects. The corresponding ylides arising from rather s-trans α,β-enals yielded dioxole derivatives. The mechanisms of the reactions are discussed.
Asymmetric iridium(I)-catalyzed allylic alkylation of monosubstituted allylic substrates with phosphinooxazolines as ligands. isolation, characterization, and reactivity of chiral (allyl)iridium(III) complexes
Garcia-Yebra, Cristina,Janssen, Joerg P.,Rominger, Frank,Helmchen, Guenter
, p. 5459 - 5470 (2004)
IrI-catalyzed allylic alkylations of linear aryl-substituted allylic acetates proceed with enantiomeric excess of up to 95% ee using bidentate phosphinooxazolines as chiral ligands. The chiral (π-allyl)Ir III complexes 14 and 15 have
Polymer-mounted N3=P(MeNCH2CH2) 3N: A green, efficient and recyclable catalyst for room-temperature transesterifications and amidations of unactivated esters
Chintareddy, Venkat Reddy,Ho, Hung-An,Sadow, Aaron D.,Verkade, John G.
experimental part, p. 6523 - 6529 (2011/12/21)
Merrifield resin-supported N3P(MeNCH2CH 2)3N shows excellent activity in the transesterification of higher esters such as glyceryl tribenzoate to methyl esters. The catalyst was successfully cycled 20 times (albeit with an increase in reaction time) without compromising yield up to the 20th cycle. The catalyst also showed good performance in amidation reactions of unactivated esters with amino alcohols.
