## Abstract The formation of the desired products is accompanied by little or trace amounts of linear amines such as (IV).
ChemInform Abstract: Facile and Chemoselective Rhodium-Catalyzed Intramolecular Hydroacylation of α,α-Disubstituted 4-Alkylidenecyclopropanals.
✍ Scribed by Damien Crepin; Coralie Tugny; James H. Murray; Christophe Aissa
- Publisher
- John Wiley and Sons
- Year
- 2012
- Weight
- 42 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0931-7597
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✦ Synopsis
Abstract
Mild intramolecular hydroacylation of α,α‐disubstituted 4‐alkylidenecyclopropanals, such (I), (VII), and (IX) is described avoiding decarbonylation and affording cycloheptenones (II), (VIII), and (X) in good yields.
📜 SIMILAR VOLUMES
## Abstract The Rh‐catalyzed asymmetric addition of α‐ (VII) or β‐substituted S‐chelating aldehydes (I), (V) towards terminal alkynes (II) is successfully used as kinetic resolution procedure to afford the corresponding α‐ and β‐substituted enones in up to 90% optical purity.
## Abstract The asymmetric rhodium‐catalyzed 1,4‐addition of sodium tetraalkylborates to β,β‐disubstituted α,β‐unsaturated esters creates quaternary carbon stereocenters with high enantioselectivity.
## Abstract InCl~3~ in combination with an amine catalyzes the cyclization of formylalkynyl substrates to afford cyclopentanone products and the pyrrolidine (IV).