α-Alkyl(aryl)sulfenyl Substituted β-Ketophosphonates: Synthesis, Properties and Reactivity.
✍ Scribed by Marian Mikolajczyk; Piotr Balczewski; Hanna Chefczynska; Aldona Szadowiak
- Publisher
- John Wiley and Sons
- Year
- 2004
- Weight
- 121 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0931-7597
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📜 SIMILAR VOLUMES
Alkyl-substituted poly(ary1 ether ketone)s (PEKs), having more than two alkyl substituents per repeat unit, were synthesized by nucleophilic substitution reaction of 1,l'-(p-phenylenedioxy)bis[ 2-methyl-4-(fluorobenzoyl)benzene] with an aromatic diol of different structure in the presence of a base.
The aza-Michael addition of enantiopure 1-aminopyrrolidines to (E)-alkenyl sulfones in the presence of a catalytic amount of ytterbium trifluoromethanesulfonate [Yb(OTf) 3 ] yields β-hydrazino sulfones in moderate to good yields and with diastereoselectivities of up to 98%. The latter undergo reduct