2,3‐Dihydro‐2,3‐dimethylenthiophen, Dihydrocyclobutathiophen und die gegenseitige Umwandlung beider Verbindungen | Zendy

Münzel Norbert | Zendy; Schweig Armin | Zendy

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2,3‐Dihydro‐2,3‐dimethylenthiophen, Dihydrocyclobutathiophen und die gegenseitige Umwandlung beider Verbindungen

Author(s) -

Münzel Norbert,

Schweig Armin

Publication year - 1988

Publication title -

chemische berichte

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.667

H-Index - 136

eISSN - 1099-0682

pISSN - 0009-2940

DOI - 10.1002/cber.19881210426

Subject(s) - chemistry , gas phase , x ray photoelectron spectroscopy , argon , absorption (acoustics) , photochemistry , medicinal chemistry , organic chemistry , nuclear magnetic resonance , physics , acoustics

2,3‐Dihydro‐2,3‐dimethylenethiophene, Dihydrocyclobutathiophene and the Mutual Interconversion of Both Compounds The title compounds 2,3‐dihydro‐2,3‐dimethylenethiophene ( 5 ) and 1,2‐dihydrocyclobuta[ b ]thiophene ( 6 ), are generated and characterized by UV‐photoelectron ( 5 ) and UV/VIS‐absorption ( 5 and 6 ) spectroscopy. The gas‐phase equilibrium 5 ⇄ 6 is discussed. According to the photoelectron (gas phase) and UV/VIS‐absorption (argon matrix) spectroscopic product analyses only 5 is present in the gas phase. The interconversion of 5 and 6 , however, is possible in an argon matrix by irradiating with light of appropriate wavelengths.

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