Aromatic Homologation by Non- Chelate- Assisted RhIII- Catalyzed C -H Functionalization of Arenes with Alkynes
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This report describes a full study of the gold-catalyzed direct alkynylation of indoles, pyrroles, and thiophenes using alkynyl hypervalent iodine reagents, especially the study of the structural requirements of alkynyl benziodoxolones for an efficient ace ...
The development of efficient synthetic methodologies is crucial to access complex molecules in an economic, eco-friendly and safe way. The reversal of the intrinsic reactivity of functional groups, called Umpolung, allows alternative synthetic strategies a ...
EPFL2012
The controlled aldol condensation between an aliph. ketone and an acetaldehyde equiv. remains a challenge. One soln. to this evergreen problem consists of the nucleophilic addn. of acetylene to the ketone and the subsequent isomerization of the resulting 3 ...
1998
This thesis is divided in seven main chapters including an introduction about the state of the art in the field, four main chapters describing the main part of the work, a short insight on the implications of the presented results for other research projec ...
EPFL2011
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Triple selectivity: Highly substituted indenylamines can be obtained with high enantioselectivity by formal [3+2] additions of aryl ketimines with internal alkynes. These rhodium(I)-catalyzed processes proceed by selective C-H activation of one of the two ...
2011
,
The first aza-C-disaccharide (D-azaMan-beta-CHz-(1 -> 6)-D-Man-alpha-OMe) that mimicks alpha-D-Manp-(1 -> 6)-alpha-D-ManOMe was made in 1994 by Johnson and coworkers. Several synthetic approaches to these disaccharide mimetics have been proposed. These are ...
2005
One-carbon homologation of aldehyde into amide is realized in one-pot by its reaction with potassium alpha -(p-methoxyphenyl)-alpha -isocyano acetic acid and hydrochloride salt of dimethylamine in toluene at room temp. followed by acidic workup. In this mu ...
