1. 2015-11-17 Reporter: Yang Chao Supervisor: Prof. Yong Huang The Transformation of α ‑ Diazocarbonyl Compounds

2.  Introduction of Diazocarbonyl Reaction  Wolff Rearrangement  Cyclopropanation Reactions  Reactions with Aromatics  Catalytic Asymmetric C−H Insertion Reactions  X−H Insertion Reactions of Diazocarbonyl Compounds  Ylide Formation from α-Diazocarbonyls  Summary & Outlook Outline 2

3. 3 Introduction of Diazocarbonyl Reaction free carbenes, carbenoids, ylides, and diazonium cations.

4. 4 Wolff Rearrangement  Arndt−Eistert Homologation Tetrahedron Lett. 2005, 46, 1103−1105.

5. 5 Wolff Rearrangement  Capture of Ketenes Org. Lett. 2010, 12, 616−618.J. Am. Chem. Soc. 2010, 132, 11379−11385.

6. 6 Wolff Rearrangement  Cycloaddition Reactions of Ketenes J. Org. Chem. 2000, 65, 4375−4384.

7. 7 Wolff Rearrangement  Ring Contraction via Wolff Rearrangement J. Am. Chem. Soc. 1985, 107, 7597−7606.

8. 8 Cyclopropanation Reactions  Cyclopropanation of Alkenes Chem. Sci. 2013, 4, 2844−2850.

9. 9 Reactions with Aromatics Synlett. 2011, 2011, 1449−1453. Tetrahedron Lett. 2005, 46, 2453−2455.  Aromatic Cycloaddition Reactions (Buchner Reaction)

10. 10 Reactions with Aromatics  Aromatic Substitution Reactions Chem. Commun. 2014, 50, 3220−3223.

11. 11 Reactions with Aromatics  Aromatic Substitution Reactions Angew. Chem.,Int. Ed. 2014, 53, 13098−13101.

12. 12 C−H Insertion Reactions  Intramolecular C−H Insertion Reactions Chem. Commun. 1992, 823−824. Org. Biomol. Chem. 2011, 9, 667−669. J. Am. Chem. Soc. 1997, 119, 9075−9076.

13. 13 C−H Insertion Reactions Tandem C−H Insertion/Cope Rearrangement J. Am. Chem. Soc. 2006, 128, 2485−2490.

14. 14 N−H Insertion Reactions Tetrahedron Lett. 2012, 53, 4862−4865. J. Am. Chem. Soc. 2012, 134, 8798−8801

15. 15 N−H Insertion Reactions Angew. Chem. Int. Ed. 2011, 50, 11483 –11486

16. 16 N−H Insertion Reactions Angew. Chem., Int. Ed. 2014, 53, 13136−13139.

17. 17 O−H Insertion Reactions J. Am. Chem. Soc. 2011, 133, 1763−1765. Nat. Chem. 2010, 2, 546−551. Acc.Chem. Res. 2012, 45, 1365−1377.

18. 18 O−H Insertion Reactions J. Am. Chem. Soc. 2010, 132, 16374−16376. Angew. Chem., Int. Ed. 2013, 52, 2555−2558. Angew. Chem. Int. Ed. 2008, 47, 6647 –6649

19. 19 Si−H & S-H Insertion Reactions Angew. Chem., Int. Ed. 2008, 47, 8496−8498. Chem. Sci., 2014, 5, 1442–1448

20. 20 Ylide Formation from α-Diazocarbonyls ethers, sulfides, amines, and carbonyl compounds  Intermolecular C−H Insertion Reactions.  [2,3]-sigmatropic rearrangement of allyl-substituted intermediates  [1,2]-insertion or Stevens rearrangement (oxonium, sulfur, and nitrogen ylides)  dipolar cycloaddition (typical of carbonyl ylides)

21. 21 Ylide Formation from α-Diazocarbonyls  Oxonium Ylides. J. Am. Chem. Soc. 2012, 134, 15497−15504. [2,3]-sigmatropic rearrangement [1,2]-Stevens Rearrangement Tetrahedron Lett. 1996, 37, 5053−5056.

22. 22 Ylide Formation from α-Diazocarbonyls  Sulfonium Ylides. [1,2]-Stevens Rearrangement Chem. Commun. 1995, 1245−1246. Org. Lett. 2008, 10, 5477−5480. Org. Biomol.Chem. 2012, 10, 8616−8627.

23. 23 Ylide Formation from α-Diazocarbonyls  Ammonium Ylides. Nucleophilic Reactions [2,3] vs [1,2] Rearrangement Synlett, 2009, 2009, 2109−2114. Eur. J. Org. Chem. 2011, 2011, 1113−1124. Org. Lett. 2005, 7, 2075−2078.

24. 24 Ylide Formation from α-Diazocarbonyls  Carbonyl Ylide 1,3-Dipolar Cycloaddition Tandem Intramolecular Ylide Formation/Intermolecular Cycloaddition. Tandem Intramolecular Ylide Formation/Intramolecular Cycloaddition J. Org. Chem. 2006, 71, 6536−6541. Chem. - Eur. J. 2001, 7, 4465−4476.

25. 25 Angew. Chem. Int. Ed. 2015, 54, 12349 –12352 Special case

26. 26 Summary & Outlook multicomponent reaction organocatalysis,photocatalysis chiral catalysis  Thermal, photochemical, organocatalytic, metal catalytic  Nucleophilic reagent  Wolff rearrangement, Cyclopropanation reactions, C−H insertion and X-H insertion

27. 27 Thank you!