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Volumn 1, Issue 5, 2005, Pages 944-952

Revisiting hydrogen [1,5] shifts in cyclopentadiene and cycloheptatriene as bimolecular reactions

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EID: 33750347032     PISSN: 15499618     EISSN: 15499626     Source Type: Journal    
DOI: 10.1021/ct0500646     Document Type: Article
Times cited : (17)

References (41)
  • 32
    • 77958463953 scopus 로고    scopus 로고
    • geometries of CPD-IVb, CPD-IIIb, CPD-VIIb, and CPD-VIIIb were made by changing all the signs of the Cartesian coordinates of the geometries of CPD-IVa, CPD-IIIa, CPD-VIIa, and CPD-VIIIa. The energies of CPD-IVb, CPD-IIIb, CPD-VIIb, and CPD-VIIIb are the same as those of CPD-IVa, CPD-IIIa, CPD-VIIa, and CPD-VIIIa
    • The geometries of CPD-IVb, CPD-IIIb, CPD-VIIb, and CPD-VIIIb were made by changing all the signs of the Cartesian coordinates of the geometries of CPD-IVa, CPD-IIIa, CPD-VIIa, and CPD-VIIIa. The energies of CPD-IVb, CPD-IIIb, CPD-VIIb, and CPD-VIIIb are the same as those of CPD-IVa, CPD-IIIa, CPD-VIIa, and CPD-VIIIa.
  • 39
    • 77958504759 scopus 로고    scopus 로고
    • CHT has a geometric isomer, bicyclo4.1.0hepta-2, 4-diene norcaradiene, NCD. NCD has a puckered conformation, which is apparently suitable for the intramolecular hydrogen shift. However, NCD cannot be a reactant for the hydrogen shift, because the cyclopropyl ring in NCD precludes the hydrogen-bridged TS structure. Cycloadditions between CHT and NCD were calculated and are less stable than the ratedetermining step VIIa, b in Figure 8. A series of isomerizations of methyl-NCDs were observed. They would involve intermediates of cycloadducts of two methyl-CHTs
    • CHT has a geometric isomer, bicyclo[4.1.0]hepta-2, 4-diene (norcaradiene, NCD). NCD has a puckered conformation, which is apparently suitable for the intramolecular hydrogen shift. However, NCD cannot be a reactant for the hydrogen shift, because the cyclopropyl ring in NCD precludes the hydrogen-bridged TS structure. Cycloadditions between CHT and NCD were calculated and are less stable than the ratedetermining step VIIa, b in Figure 8. A series of isomerizations of methyl-NCDs were observed. They would involve intermediates of cycloadducts of two methyl-CHTs.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.