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Volumn 60, Issue 2, 2004, Pages 301-306

Studies on the carbenium-iminium ions derived from N-methylmorpholine-N- oxide (NMMO)

Author keywords

Carbenium iminium ions; Cellulose solvents; Isotopic labeling; Mannich intermediates; N Methylmorpholine N oxide (NMMO); Trapping

Indexed keywords

4 METHYL 3,6 DIHYDRO 2H [1,4]OXAZINIUM CHLORIDE; 4 METHYLMORPHOLINE N OXIDE; MORPHOLINE DERIVATIVE; N METHYLENEMORPHOLINIUM CHLORIDE; UNCLASSIFIED DRUG; WATER;

EID: 0346887156     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tet.2003.11.015     Document Type: Article
Times cited : (22)

References (25)
  • 2
    • 0001654231 scopus 로고
    • For a review see:
    • For a review see: Schröder M. Chem. Rev. 80:1980;187-213.
    • (1980) Chem. Rev. , vol.80 , pp. 187-213
    • Schröder, M.1
  • 7
    • 85030924680 scopus 로고    scopus 로고
    • German Patent DE-OS 3,034,685, 1980.
    • (a) Brandner, A.; Zengel, H. G. German Patent DE-OS 3,034,685, 1980.
    • Brandner, A.1    Zengel, H.G.2
  • 12
    • 85030928532 scopus 로고    scopus 로고
    • This applies for instance to reaction mixtures containing NMMO monohydrate, or NMMO-cellulose spinning dopes
    • This applies for instance to reaction mixtures containing NMMO monohydrate, or NMMO-cellulose spinning dopes.
  • 14
    • 85030916867 scopus 로고    scopus 로고
    • note
    • It was checked that 6 was stable under the prevailing conditions, and did not transform into 5 . Thus, formation of 5 must be due to the conversion of 3 into 2 rather than a transformation of the trapping products.
  • 15
    • 85030929011 scopus 로고    scopus 로고
    • note
    • The overall reaction order was determined using equivalent starting concentrations. Applying a large excess (80 equiv.) of water, the water concentration could be regarded constant over the reaction time, and the reaction became pseudo-first order with regard to the starting material 3 , i.e., d[2]/dt=k′[3], with k′=k[H2O].
  • 16
    • 85030923037 scopus 로고    scopus 로고
    • -1
    • -1.
  • 17
    • 85030923924 scopus 로고    scopus 로고
    • Trapping after reacidification proved that indeed not only the trapping reaction, but also the rearrangement itself was prevented
    • Trapping after reacidification proved that indeed not only the trapping reaction, but also the rearrangement itself was prevented.
  • 18
    • 85030926354 scopus 로고    scopus 로고
    • For procedure and for the calculated thermodynamic values see Section 3
    • For procedure and for the calculated thermodynamic values see Section 3.
  • 19
    • 85030930022 scopus 로고    scopus 로고
    • This comprised localization of transition states and geometry minima, supported by vibrational frequency analysis and intrinsic reaction coordinate analysis
    • This comprised localization of transition states and geometry minima, supported by vibrational frequency analysis and intrinsic reaction coordinate analysis.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.