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Volumn 74, Issue 20, 2009, Pages 7804-7811

o-Fluoranil: Stereochemistry and mechanism of its Diels-Alder reactions

Author keywords

[No Author keywords available]

Indexed keywords

CHEMICAL EQUATIONS; DIELS-ALDER REACTION; HYBRID DENSITY FUNCTIONAL CALCULATIONS; ORBITAL INTERACTION; STERIC EFFECT; STERIC HINDRANCES; TRANSITION STATE;

EID: 70349857664     PISSN: 00223263     EISSN: None     Source Type: Journal    
DOI: 10.1021/jo9015562     Document Type: Article
Times cited : (13)

References (13)
  • 3
    • 70349859582 scopus 로고    scopus 로고
    • version 7.0; Schrodinger, LLC: New York, Frequency calculations carried out on all transition states found a single negative frequency corresponding to motion along the reaction coordinate. Except where a larger basis set is indicated, calculations were performed at the B3LYP/6-31G** level of theory
    • Jaguar, version 7.0; Schrodinger, LLC: New York, 2007. Frequency calculations carried out on all transition states found a single negative frequency corresponding to motion along the reaction coordinate. Except where a larger basis set is indicated, calculations were performed at the B3LYP/6-31G** level of theory.
    • (2007) Jaguar
  • 4
    • 0001852649 scopus 로고
    • An analogous reaction of hexafluorobenzene with ethylene glycol was carried out, see
    • An analogous reaction of hexafluorobenzene with ethylene glycol was carried out, see: Burdon, J.; Damodaran, V. A.; Tatlow, J. C. J. Chem. Soc. 1964, 763.
    • (1964) J. Chem. Soc. , pp. 763
    • Burdon, J.1    Damodaran, V.A.2    Tatlow, J.C.3
  • 7
    • 70349847176 scopus 로고    scopus 로고
    • The fact that the thermodynamic bias favoring dioxene formation over Diels-Alder addition is nearly the same for styrene and trans-stilbene (ΔΔH = 14.0 vs. 13.4 kcal/mol, respectively) supports the conclusion that steric effects are responsible for the dioxene from trans-stilbene. The thermodynamic bias is considerably greater for cis-stilbene (ΔH=18.5 kcal/mol), a reflection of steric hindrance in the (endo) Diels-Alder adduct, not just in the transition structure leading to it
    • The fact that the thermodynamic bias favoring dioxene formation over Diels-Alder addition is nearly the same for styrene and trans-stilbene (ΔΔH = 14.0 vs. 13.4 kcal/mol, respectively) supports the conclusion that steric effects are responsible for the dioxene from trans-stilbene. The thermodynamic bias is considerably greater for cis-stilbene (ΔH=18.5 kcal/mol), a reflection of steric hindrance in the (endo) Diels-Alder adduct, not just in the transition structure leading to it.
  • 8
    • 70349866098 scopus 로고    scopus 로고
    • An irc calculation for the endo transition structure smoothly connected starting materials with the adduct
    • An irc calculation for the endo transition structure smoothly connected starting materials with the adduct.
  • 10
    • 40949135011 scopus 로고    scopus 로고
    • For a discussion of other factors that may control endo/exo selectivity, see
    • For a discussion of other factors that may control endo/exo selectivity, see: Lahiri, S.; Yadav, S.; Banerjee, S.; Patil, M. P.; Sunoj, R. B. J. Org. Chem. 2008, 73, 435.
    • (2008) J. Org. Chem. , vol.73 , pp. 435
    • Lahiri, S.1    Yadav, S.2    Banerjee, S.3    Patil, M.P.4    Sunoj, R.B.5
  • 12
    • 70349873264 scopus 로고    scopus 로고
    • Barthel, J.; Bustrich, R. German patent DE 19633027, 1988
    • Barthel, J.; Bustrich, R. German patent DE 19633027, 1988.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.