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Volumn 48, Issue 41, 2009, Pages 7612-7615

The Newman-Kwart rearrangement of O-aryl thiocarbamates: Substantial reduction in reaction temperatures through palladium catalysis

Author keywords

Homogeneous catalysis; Palladium; Reaction mechanism; Rearrangement; Sulfur compounds

Indexed keywords

ARYL THIOCARBAMATES; DFT STUDY; HOMOGENEOUS CATALYSIS; INTERMOLECULAR EXCHANGE; ISOTOPIC LABELLING; OXIDATIVE ADDITIONS; PALLADIUM CATALYSIS; REACTION MECHANISM; REACTION TEMPERATURE; REARRANGEMENT; RESTING STATE; SUBSTANTIAL REDUCTION; THERMAL CONDITION; THIOCARBAMATES; UNCATALYZED REACTIONS;

EID: 70349992665     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200903908     Document Type: Article
Times cited : (55)

References (73)
  • 5
    • 70350000197 scopus 로고    scopus 로고
    • Zonta et al. suggest the term Miyazaki-Newman-Kwart rearrangement.
    • Zonta et al. suggest the term Miyazaki-Newman-Kwart rearrangement.
  • 45
    • 40849106264 scopus 로고    scopus 로고
    • 2NC(S)Cl is an inexpensive reagent that is available in bulk, November
    • 2NC(S)Cl is an inexpensive reagent that is available in bulk, see: a) D. Kusch, Spec. Chem. 2003, November, 41;
    • (2003) Spec. Chem. , pp. 41
    • Kusch, D.1
  • 47
    • 0002079323 scopus 로고
    • The NKR has been subject to detailed mechanistic studies, most of which support reaction proceeding through A, see ref. [3b] and: a
    • The NKR has been subject to detailed mechanistic studies, most of which support reaction proceeding through A, see ref. [3b] and: a) K. Miyazaki, Tetrahedron Lett. 1968, 9, 2793;
    • (1968) Tetrahedron Lett. , vol.9 , pp. 2793
    • Miyazaki, K.1
  • 54
    • 67650526327 scopus 로고    scopus 로고
    • Cross-coupling of Ar-X with RSH has been developed extensively
    • a) Cross-coupling of Ar-X with RSH has been developed extensively, see: E. Alvaro, J. F. Hartwig, J. Am. Chem. Soc. 2009, 131, 7858, and references therein;
    • (2009) J. Am. Chem. Soc. , vol.131 , pp. 7858
    • Alvaro, E.1    Hartwig, J.F.2
  • 55
    • 0037154722 scopus 로고    scopus 로고
    • Pd'-catalyzed allylic thiocarbamate rearrangements
    • b) Pd'-catalyzed allylic thiocarbamate rearrangements: H.-J. Gais, A. Böhme, J. Org. Chem. 2002, 67, 1153;
    • (2002) J. Org. Chem. , vol.67 , pp. 1153
    • Gais, H.-J.1    Böhme, A.2
  • 58
    • 70349993186 scopus 로고    scopus 로고
    • 3 reduces the rearrangement temperature of dimethyl-0-(3-pyridyl)thiocarbamate from 250°C to 190°C, see ref.[3b];
    • 3 reduces the rearrangement temperature of dimethyl-0-(3-pyridyl)thiocarbamate from 250°C to 190°C, see ref.[3b];
  • 60
    • 70349977413 scopus 로고    scopus 로고
    • 2] (cod = cyclooctadiene)) or 100 mol% MgBr2, in refluxing toluene induced complete rearrangement of o-, m- andp-la. Substrates lb, Ic, 1g and 1h failed to rearrange under these conditions.
    • 2] (cod = cyclooctadiene)) or 100 mol% MgBr2, in refluxing toluene induced complete rearrangement of o-, m- andp-la. Substrates lb, Ic, 1g and 1h failed to rearrange under these conditions.
  • 62
    • 70349993187 scopus 로고    scopus 로고
    • 2-1a] rearranged without cross-over.
    • 2-1a] rearranged without cross-over.
  • 67
    • 70349978587 scopus 로고    scopus 로고
    • See Supporting Information for full details.
    • See Supporting Information for full details.
  • 68
    • 70349994396 scopus 로고    scopus 로고
    • 3P ligand.
    • 3P ligand.
  • 69
    • 70349983608 scopus 로고    scopus 로고
    • 3P ligand, would minimise cross-over.
    • 3P ligand, would minimise cross-over.
  • 72
    • 70349977410 scopus 로고    scopus 로고
    • -1 for step VI. The key change is thus the oxidative addition step (II), consistent with lower reactivity displayed by less electronwithdrawing substituents (Table 1).
    • -1 for step VI. The key change is thus the oxidative addition step (II), consistent with lower reactivity displayed by less electronwithdrawing substituents (Table 1).
  • 73
    • 33751385897 scopus 로고
    • The hindered N,N-dimethylthiocarbamates derived from 2,2'dihydroxy-1,1'- binaphthalene and hydroxy cyclophane (ref. [17]) have, so far, failed to undergo catalyzed rearrangement. However, it is anticipated that more efficient catalysts will be developed in due course
    • The hindered N,N-dimethylthiocarbamates derived from 2,2'dihydroxy-1,1'- binaphthalene (D. Fabbri, G. Delogu, O. De Lucchi, J. Org. Chem. 1993, 58, 1748) and hydroxy cyclophane (ref. [17]) have, so far, failed to undergo catalyzed rearrangement. However, it is anticipated that more efficient catalysts will be developed in due course.
    • (1993) J. Org. Chem. , vol.58 , pp. 1748
    • Fabbri, D.1    Delogu, G.2    De Lucchi, O.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.