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Search for "β-carbon elimination" in Full Text gives 2 result(s) in Beilstein Journal of Organic Chemistry.
Transition-metal-catalyzed domino reactions of strained bicyclic alkenes
- Austin Pounder,
- Eric Neufeld,
- Peter Myler and
- William Tam
Beilstein J. Org. Chem. 2023, 19, 487–540, doi:10.3762/bjoc.19.38
Graphical Abstract
Figure 1: Ring-strain energies of homobicyclic and heterobicyclic alkenes in kcal mol−1. a) [2.2.1]-Bicyclic ...
Figure 2: a) Exo and endo face descriptions of bicyclic alkenes. b) Reactivity comparisons for different β-at...
Scheme 1: Ni-catalyzed ring-opening/cyclization cascade of heterobicyclic alkenes 1 with alkyl propiolates 2 ...
Scheme 2: Ni-catalyzed ring-opening/cyclization cascade of heterobicyclic alkenes 8 with β-iodo-(Z)-propenoat...
Scheme 3: Ni-catalyzed two- and three-component difunctionalizations of norbornene derivatives 15 with alkyne...
Scheme 4: Ni-catalyzed intermolecular three-component difunctionalization of oxabicyclic alkenes 1 with alkyn...
Scheme 5: Ni-catalyzed intermolecular three-component carboacylation of norbornene derivatives 15.
Scheme 6: Photoredox/Ni dual-catalyzed coupling of 4-alkyl-1,4-dihydropyridines 31 with heterobicyclic alkene...
Scheme 7: Photoredox/Ni dual-catalyzed coupling of α-amino radicals with heterobicyclic alkenes 30.
Scheme 8: Cu-catalyzed rearrangement/allylic alkylation of 2,3-diazabicyclo[2.2.1]heptenes 47 with Grignard r...
Scheme 9: Cu-catalyzed aminoboration of bicyclic alkenes 1 with bis(pinacolato)diboron (B2pin2) (53) and O-be...
Scheme 10: Cu-catalyzed borylalkynylation of oxabenzonorbornadiene (30b) with B2pin2 (53) and bromoalkynes 62.
Scheme 11: Cu-catalyzed borylacylation of bicyclic alkenes 1.
Scheme 12: Cu-catalyzed diastereoselective 1,2-difunctionalization of oxabenzonorbornadienes 30 for the synthe...
Scheme 13: Fe-catalyzed carbozincation of heterobicyclic alkenes 1 with arylzinc reagents 74.
Scheme 14: Co-catalyzed addition of arylzinc reagents of norbornene derivatives 15.
Scheme 15: Co-catalyzed ring-opening/dehydration of oxabicyclic alkenes 30 via C–H activation of arenes.
Scheme 16: Co-catalyzed [3 + 2] annulation/ring-opening/dehydration domino reaction of oxabicyclic alkenes 1 w...
Scheme 17: Co-catalyzed enantioselective carboamination of bicyclic alkenes 1 via C–H functionalization.
Scheme 18: Ru-catalyzed cyclization of oxabenzonorbornene derivatives with propargylic alcohols for the synthe...
Scheme 19: Ru-catalyzed coupling of oxabenzonorbornene derivatives 30 with propargylic alcohols and ethers 106...
Scheme 20: Ru-catalyzed ring-opening/dehydration of oxabicyclic alkenes via the C–H activation of anilides.
Scheme 21: Ru-catalyzed of azabenzonorbornadiene derivatives with arylamides.
Scheme 22: Rh-catalyzed cyclization of bicyclic alkenes with arylboronate esters 118.
Scheme 23: Rh-catalyzed cyclization of bicyclic alkenes with dienyl- and heteroaromatic boronate esters.
Scheme 24: Rh-catalyzed domino lactonization of doubly bridgehead-substituted oxabicyclic alkenes with seconda...
Scheme 25: Rh-catalyzed domino carboannulation of diazabicyclic alkenes with 2-cyanophenylboronic acid and 2-f...
Scheme 26: Rh-catalyzed synthesis of oxazolidinone scaffolds 147 through a domino ARO/cyclization of oxabicycl...
Scheme 27: Rh-catalyzed oxidative coupling of salicylaldehyde derivatives 151 with diazabicyclic alkenes 130a.
Scheme 28: Rh-catalyzed reaction of O-acetyl ketoximes with bicyclic alkenes for the synthesis of isoquinoline...
Scheme 29: Rh-catalyzed domino coupling reaction of 2-phenylpyridines 165 with oxa- and azabicyclic alkenes 30....
Scheme 30: Rh-catalyzed domino dehydrative naphthylation of oxabenzonorbornadienes 30 with N-sulfonyl 2-aminob...
Scheme 31: Rh-catalyzed domino dehydrative naphthylation of oxabenzonorbornadienes 30 with arylphosphine deriv...
Scheme 32: Rh-catalyzed domino ring-opening coupling reaction of azaspirotricyclic alkenes using arylboronic a...
Scheme 33: Tandem Rh(III)/Sc(III)-catalyzed domino reaction of oxabenzonorbornadienes 30 with alkynols 184 dir...
Scheme 34: Rh-catalyzed asymmetric domino cyclization and addition reaction of 1,6-enynes 194 and oxa/azabenzo...
Scheme 35: Rh/Zn-catalyzed domino ARO/cyclization of oxabenzonorbornadienes 30 with phosphorus ylides 201.
Scheme 36: Rh-catalyzed domino ring opening/lactonization of oxabenzonorbornadienes 30 with 2-nitrobenzenesulf...
Scheme 37: Rh-catalyzed domino C–C/C–N bond formation of azabenzonorbornadienes 30 with aryl-2H-indazoles 210.
Scheme 38: Rh/Pd-catalyzed domino synthesis of indole derivatives with 2-(phenylethynyl)anilines 212 and oxabe...
Scheme 39: Rh-catalyzed domino carborhodation of heterobicyclic alkenes 30 with B2pin2 (53).
Scheme 40: Rh-catalyzed three-component 1,2-carboamidation reaction of bicyclic alkenes 30 with aromatic and h...
Scheme 41: Pd-catalyzed diarylation and dialkenylation reactions of norbornene derivatives.
Scheme 42: Three-component Pd-catalyzed arylalkynylation reactions of bicyclic alkenes.
Scheme 43: Three-component Pd-catalyzed arylalkynylation reactions of norbornene and DFT mechanistic study.
Scheme 44: Pd-catalyzed three-component coupling N-tosylhydrazones 236, aryl halides 66, and norbornene (15a).
Scheme 45: Pd-catalyzed arylboration and allylboration of bicyclic alkenes.
Scheme 46: Pd-catalyzed, three-component annulation of aryl iodides 66, alkenyl bromides 241, and bicyclic alk...
Scheme 47: Pd-catalyzed double insertion/annulation reaction for synthesizing tetrasubstituted olefins.
Scheme 48: Pd-catalyzed aminocyclopropanation of bicyclic alkenes 1 with 5-iodopent-4-enylamine derivatives 249...
Scheme 49: Pd-catalyzed, three-component coupling of alkynyl bromides 62 and norbornene derivatives 15 with el...
Scheme 50: Pd-catalyzed intramolecular cyclization/ring-opening reaction of heterobicyclic alkenes 30 with 2-i...
Scheme 51: Pd-catalyzed dimer- and trimerization of oxabenzonorbornadiene derivatives 30 with anhydrides 268.
Scheme 52: Pd-catalyzed Catellani-type annulation and retro-Diels–Alder of norbornadiene 15b yielding fused xa...
Scheme 53: Pd-catalyzed hydroarylation and heteroannulation of urea-derived bicyclic alkenes 158 and aryl iodi...
Scheme 54: Access to fused 8-membered sulfoximine heterocycles 284/285 via Pd-catalyzed Catellani annulation c...
Scheme 55: Pd-catalyzed 2,2-bifunctionalization of bicyclic alkenes 1 generating spirobicyclic xanthone deriva...
Scheme 56: Pd-catalyzed Catellani-type annulation and retro-Diels–Alder of norbornadiene (15b) producing subst...
Scheme 57: Pd-catalyzed [2 + 2 + 1] annulation furnishing bicyclic-fused indanes 281 and 283.
Scheme 58: Pd-catalyzed ring-opening/ring-closing cascade of diazabicyclic alkenes 130a.
Scheme 59: Pd-NHC-catalyzed cyclopentannulation of diazabicyclic alkenes 130a.
Scheme 60: Pd-catalyzed annulation cascade generating diazabicyclic-fused indanones 292 and indanols 294.
Scheme 61: Pd-catalyzed skeletal rearrangement of spirotricyclic alkenes 176 towards large polycyclic benzofur...
Scheme 62: Pd-catalyzed oxidative annulation of aromatic enamides 298 and diazabicyclic alkenes 130a.
Scheme 63: Accessing 3,4,5-trisubstituted cyclopentenes 300, 301, 302 via the Pd-catalyzed domino reaction of ...
Scheme 64: Palladacycle-catalyzed ring-expansion/cyclization domino reactions of terminal alkynes and bicyclic...
Scheme 65: Pd-catalyzed carboesterification of norbornene (15a) with alkynes, furnishing α-methylene γ-lactone...
Carbon–carbon bond cleavage for Cu-mediated aromatic trifluoromethylations and pentafluoroethylations
- Tsuyuka Sugiishi,
- Hideki Amii,
- Kohsuke Aikawa and
- Koichi Mikami
Beilstein J. Org. Chem. 2015, 11, 2661–2670, doi:10.3762/bjoc.11.286
- fluoroalkylated aromatics. Keywords: β-carbon elimination; carbon–carbon bond cleavage; decarboxylation; tetrahedral intermediate; trifluoroacetate; fluoral; trifluoromethylation; Introduction Organofluorine compounds attract attention because of their applicability in various fields, such as medicine
Graphical Abstract
Scheme 1: Trifluoromethylation using trifluoroacetate.
Scheme 2: Decarboxylative pentafluoroethylation and its application.
Scheme 3: Trifluoromethyation with trifluoroacetate in a flow system.
Scheme 4: Trifluoromethylation of 4-bromotoluene by [(NHC)Cu(TFA)].
Scheme 5: Trifluoromethylation of aryl iodides with small amounts of Cu and Ag2O. aThe yield was determined b...
Scheme 6: C–H trifluoromethylation of arenes using trifluoroacetic acid.
Scheme 7: CF3Cu generated from chlorofluoroacetate and CuI.
Scheme 8: [18F]Trifluoromethyation with difluorocarbenes for PET. aRadiochemical yield determined by HPLC.
Scheme 9: Trifluoromethylation with trifluoroacetate and copper iodide.
Scheme 10: Preparation of trifluoromethylcopper from trifluoromethyl ketone.
Scheme 11: Trifluoromethylation of aryl iodides. aIsolated yield. b1 equivalent each of CF3Cu reagent and 1,10...
Scheme 12: Pentafluoroethylation of aryl bromides. aYield was determined by 19F NMR analysis using benzotriflu...
Scheme 13: Perfluoroalkylation reactions of arylboronic acids. aIsolated yield. bDMF was used instead of tolue...
Scheme 14: Trifluoromethylation with silylated hemiaminal of fluoral.
Scheme 15: Catalytic trifluoromethylation with a fluoral derivative.
Scheme 16: The scope of Cu-catalyzed aromatic trifluoromethylation. The yield was determined by 19F NMR analys...
Scheme 17: Plausible mechanism of Cu-catalyzed aromatic trifluoromethylation [53].
