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1,4‐Didehydronaphthalin
Author(s) -
Roth Wolfgang R.,
Wasser Thorsten,
Zimmermann Heiko,
Hopf Henning,
Werner Christian
Publication year - 1996
Publication title -
liebigs annalen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0947-3440
DOI - 10.1002/jlac.199619961030
Subject(s) - chemistry , naphthalene , benzene , toluene , methanol , hydrogen , trapping , activation energy , photochemistry , medicinal chemistry , organic chemistry , biology , ecology
1,4‐Didehydronaphthalene The energy profile of the Bergman equilibrium o ‐diethinyl‐benzene ( 1 · 1,4‐didehydronaphthalene ( 2 ) has been established from the temperature and NO dependence of the trapping rate of the diradicals 2 which leads to a heat of formation for 2 of Δ H f 0 = 152.9 · 1.4 kcal · mol −1 . Activation parameters for the hydrogen abstraction of 2 and 1,4‐didehydrobenzene ( 5 ) have been derived from the rate of the naphthalene and benzene formation, when 1 and cis ‐3‐hexene‐1,5‐diyne ( 4 ) are heated in the presence of methanol, toluene, and 1,4‐cyclohexadiene.