A short synthesis of protected 3-deoxy-d-arabino-2-heptulosonates (DAH) from shikimic acid based on silyl group migration
Sign Up to like & getrecommendations! Published in 2018 at "Tetrahedron Letters"
DOI: 10.1016/j.tetlet.2018.11.045
Abstract: Abstract The reaction of (2 S ,3 S ,4 R )-2,3,4,7-tetrahydroxy-6-oxoheptanals with lower alcohols produced protected 3-deoxy- d - arabino -2-heptulosonates. The key transformation is based on an 1,4-O–O silyl group migration, followed by 6-… read more here.
Keywords: arabino heptulosonates; group migration; deoxy arabino; silyl group ... See more keywords
Synthesis of Salicaceae Acetyl Salicins Using Selective Deacetylation and Acetyl Group Migration.
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DOI: 10.1021/acs.jnatprod.9b00570
Abstract: In the present work, the synthesis of acetylated salicins, which occur naturally in many Salicaceae species, is reported. The preparation of 2-O-acetylsalicin, 2-O-acetylchlorosalicin, and 2-O-acetylethylsalicin from peracetylated bromosalicin with selective acid-catalyzed deacetylation and one-pot nucleophilic… read more here.
Keywords: acetyl group; acetyl; group migration; deacetylation ... See more keywords
Reversible Alkyl-Group Migration between Iron and Sulfur in [Fe4S4] Clusters.
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DOI: 10.1021/jacs.2c03195
Abstract: Synthetic [Fe4S4] clusters with Fe-R groups (R = alkyl/benzyl) are shown to release organic radicals on an [Fe4S4]3+-R/[Fe4S4]2+ redox couple, the same that has been proposed for a radical-generating intermediate in the superfamily of radical… read more here.
Keywords: fe4s4 clusters; group; group migration; alkyl group ... See more keywords
Theoretical Study of Substituent Effect in Aryl Group Migration in (para-C6H4X)Mn(CO)5 Complexes
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DOI: 10.1134/s0036023618070240
Abstract: In this study, we report substituent effect on aryl group migration in (para-C6H4X)Mn(CO)5 complexes using mpw1pw91 quantum chemical calculations. These calculations reveal good linear relationships between barrier energy (ΔE), activation energy (ΔH‡), activation free energy… read more here.
Keywords: substituent effect; c6h4x; aryl group; para c6h4x ... See more keywords
Spatial modulation of individual behaviors enables an ordered structure of diverse phenotypes during bacterial group migration
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DOI: 10.7554/elife.67316
Abstract: Coordination of diverse individuals often requires sophisticated communications and high-order computational abilities. Microbial populations can exhibit diverse individualistic behaviors, and yet can engage in collective migratory patterns with a spatially sorted arrangement of phenotypes. However,… read more here.
Keywords: group migration; spatial modulation; diverse; diverse individuals ... See more keywords