Syntheses, Structure, Physical Properties, and Electronic Structures of DyCuxAl12–x (4.0 ≤ x ≤ 6.0)

Lin, Hua; Cai, Weizhao; Shi, Yilei; Chen, Ling

doi:10.1002/ejic.201100367

Cited by 1 publication

(1 citation statement)

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“…Among these, catalytic asymmetric diastereodivergent reactions are the most efficient methods for the diastereodivergent synthesis of multiple diastereomers. In this review, we attempt to give a comprehensive overview of the reported catalytic asymmetric diastereodivergent approaches . In principle, only those publications reporting the formation of more than one diastereomer from the same substrates using a catalytic asymmetric approach are included.…”

Section: Introductionmentioning

confidence: 99%

Advances in Asymmetric Diastereodivergent Catalysis

2017

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Because the biological and/or pharmacologicalp roperties of ag iven molecule often depend on the absolutea nd relative configurations of the stereogenic centers,d ifferent diastereomers may exhibit totally different biological and/or pharmacological activities.T herefore,f or compoundsc ontaining multiple stereogenic centers,t he stereoselective asymmetric synthesis of all of the individual diastereomers, preferably using ac atalytic method, is of great interest andi mportance in organic synthesis and drug discovery.I nt his context, the development of catalytic diastereodivergent methods is highly desirable,s incei tp rovides one of the most efficient ways to access multipled iastereomers from the same substrates.T he current review attemptst os umma-rize the developments in the field of asymmetric diastereodivergent catalysis. Scheme 5. Michaelr eactions for the synthesis of both syn-and anti-diastereomers. Scheme 6. Diastereodivergent tandem Michael-Michael reaction. Scheme 8. Diastereodivergent aldol reactionsofc ycloketones andaryl aldehydes. Scheme 9. l-Proline/guanidinium salt co-catalyzed diastereodivergent aldol reactions. Scheme 7. Diastereodivergent synthesis of 2,4-dinitro ester derivatives using bifunctional squaramidec atalysts. Scheme 11. Diastereodivergent synthesis of spirooxindole derivatives.Scheme 12. Diastereodivergent synthesis of bis(spirocyclic)oxindoles derivatives. Scheme 14. Diastereodivergent formal hydroaminination, hydrooxidation, and reductive Mannich reaction of enal 52. Scheme 15. Diastereodivergent alkylamination, diamination, and aminooxidation of enal 64. Scheme 16. Generation of diastereodivergence in the one-pot sequential cycle-specific catalysis. Scheme 17. Organocatalytic diastereodivergent synthesis of furan-fused carbocycles. Scheme 18. Accesstot he full matrixo fthe stereoisomers of the annulated furan. Scheme 19. Diastereodivergent cascade reaction towards chiral diamine derivatives. Scheme 23. Diastereodivergent synthesis of indolo[2,3-a]-, benzo[a]-, and thieno[3,2-a]quinolizidine skeletons. Scheme 24. Diastereodivergent [4+ +2] cycloaddition of cyclic enones with alkenyl-or alkynylmethylidenemalononitriles. Scheme 25. Diastereodivergent synthesis of cyclohexane derivativesu sing bifunctional squaramide catalysts. Scheme 26. Diastereodivergent synthesis of polyfuntionalized cyclohexanes using MDOs. Scheme 27. Enantioselectived iastereodivergentsynthesis of lycorane diastereomers using MDOs. Scheme 28. Diastereodivergent tandem hetero-Diels-Alder/oxa-Michael reaction catalyzed by MDOs. Scheme 29. Diastereodivergent approach towards dihydrobezofuran derivatives. Scheme 30. Diastereodivergent approach towards tetrahydrofuran derivatives. Scheme 31. Proposed transition states leading to cis-a nd trans-dihydrobenzofuran derivatives. Scheme 32. Adiastereodivergent[4 + +2] annulation of 16 and 127. Scheme 35. Diastereodivergent cycloaddition of azomethine ylides with C 60 . Scheme 36. Diastereodivergent synthesis of the four stereoisomers of the pyrrolidinoendofullerenes. S...

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Section: Introductionmentioning

confidence: 99%