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Volumn 34, Issue 4, 1995, Pages 487-489

Crystal Structure of the Dimeric (4‐tert‐Butylthiazolato)(glyme)lithium: Carbene Character of a Formyl Anion Equivalent

Author keywords

acylation; carbenes; formyl anion equivalent

Indexed keywords


EID: 33748241399     PISSN: 05700833     EISSN: 15213773     Source Type: Journal    
DOI: 10.1002/anie.199504871     Document Type: Article
Times cited : (41)

References (86)
  • 40
    • 84985533138 scopus 로고
    • Recent reviews:, synthesis, 1162–1176, and references therein.
    • (1993)
    • Dondoni, A.1
  • 44
    • 84985630435 scopus 로고    scopus 로고
    • 2 + 2.0401 P] with P = ( F o2 + 2 F c2)/3, all non‐hydrogen atoms anisotropic, hydrogens (except those of the heterocyclic ring) at calculated positions with fixed isotropic temperature factors. The conventional R value R1 was 0.0598 for 3117 reflections with I > 2σ( I). All calculations have been performed on a Micro‐VAX II and a DEC AXP 3000–300 [11, 12]. Further details of the crystal structure determination may be obtained from the Fachinformationszentrum Karlsruhe, D‐76344 Eggenstein‐Leopoldshafen (Germany) on quoting the depository number CSD‐380063.
  • 45
    • 84985572189 scopus 로고    scopus 로고
    • (a) SHELXTL‐PLUS (VMS), Vers. 4.21, Siemens Analytical X‐Ray Instruments Inc., Madison, WI, 1990.
  • 46
    • 84985526415 scopus 로고    scopus 로고
    • SHELXL‐93, Program for the Refinement of Crystal Structures, Göttingen, 1993.
    • Sheldrick, G.M.1
  • 47
    • 84985528394 scopus 로고    scopus 로고
    • PLATON 94, Program for Geometrical Analysis of Crystal Structures, Utrecht, 1994.
    • Spek, A.L.1
  • 48
    • 84985526405 scopus 로고    scopus 로고
    • SCHAKAL‐88B, A FORTRAN Program for the Graphic Representation of Molecular and Crystallographic Models, Freiburg, 1988.
    • Keller, E.1
  • 57
    • 0001123214 scopus 로고
    • Zur Struktur der Lithiumverbindungen von Sulfonen, Sulfoximiden, Sulfoxiden, Thioethern und 1,3-Dithianen, Nitrilen, Nitroverbindungen und Hydrazonen
    • CLi distances greater than 250 pm are generally not considered to be bonds
    • (1989) Angewandte Chemie , vol.101 , pp. 286-306
    • Boche, G.1
  • 59
    • 84985503368 scopus 로고    scopus 로고
    • Also N1–C3(N2–C10) is increased by 2.2(2.0) pm. S1–C2(S2–C9) remains essentially the same (± 0.5 pm), while C2–C3(C9–C10) is somewhat shortened (2.51.9) pm.
  • 65
    • 3142640259 scopus 로고
    • (a) The enormous importance of the analogous thiazol carbenes (general structure: Li in 7 is exchanged by a substituent R) in biochemical and other processes can only be mentioned here. see, for example
    • (1958) J. Am. Chem. Soc. , vol.80 , pp. 3719-3726
    • Breslow, R.1
  • 82
    • 84985526307 scopus 로고    scopus 로고
    • personal communication, July 11, 1994. We thank A. J. Arduengo III for the data of 10.
    • Arduengo, A.J.1    Tamm, M.2
  • 83
    • 84985526311 scopus 로고    scopus 로고
    • + as Lewis acid. For example, the N‐C‐S angle in lithiothiazolé (most stable singlet) is calculated to be 107.9°, while 108.6° results for a lithiothiazole · LiOH complex. For comparison: the calculated angle for the thiazole 8 is 115.4°.
  • 84
    • 66349103739 scopus 로고
    • α-Oxygen-Substituted Organolithium Compounds and Their Carbenoid Nature: Calculations of the Configurational Stability and of LiCH2OH Model Structures, Crystal Structure of Diphenyl(trimethylsilyloxy)methyllithium · 3 THF, and the Stereochemistry of the (Reverse) Brook Rearrangement
    • 2 and 10 now experimentally verify the fourth (high‐energy) model structure
    • (1992) Chemische Berichte , vol.125 , pp. 2265-2273
    • Boche, G.1    Opel, A.2    Marsch, M.3    Harms, K.4    Haller, F.5    Lohrenz, J.C.W.6    Thümmler, C.7    Koch, W.8


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.