Intramolecular reactivity of 1-alkoxyanthronylidenes. Disproportionation (set) of carbene-derived 1,5-biradicals

Tetrahedron Letters

Volumn 39, Issue 37, 1998, Pages 6675-6678

  Gotzhein, Frank ^a   Kirmse, Wolfgang ^a  

^a RUHR UNIVERSITY BOCHUM   (Germany)

Author keywords

Carbenes; Cyclisation; Diazo compounds; Electron transfer

Indexed keywords

ANTHRONYLIDENE DERIVATIVE; BENZENE DERIVATIVE; UNCLASSIFIED DRUG;

ARTICLE; CHEMICAL REACTION; CYCLIZATION; ELECTRON TRANSPORT; NUCLEAR MAGNETIC RESONANCE; SPECTROSCOPY; STEREOCHEMISTRY;

EID: 0032505227     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(98)01398-7     Document Type: Article

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15. 3): δ 1.52 (t, J = 7.6 Hz, 3 H), 3.31 (q, J = 7.6 Hz, 2 H), 7.52 (t, J = 8.0 Hz, and td, J = 8.0/1.5 Hz), 7.68 (dd, J = 8.0/0.6 Hz), 7.70 (td, J = 8.0/1.5 Hz), 7.93 (d, br, J = 8.0 Hz), 8,12 (dd, J = 8.0/0.6 Hz), 8.56 (dd, br, J = 8.0/1.5 Hz).
16. 3): δ 1.12 (t, J = 7.5 Hz, 3 H), 1.95 (qt, J = 7.5/6.5 Hz, 2 H), 3.06 (s, 3 H), 4.03 and 4.14 (dt, J = 9.5/6.5 Hz, 1 H), 5.87 (s, 1 H), 7.16-8.23 (m, 7 H).
17. 3): δ 1.05 (t, J = 7.5 Hz, 3 H), 1.95 (qd, J = 7.5/5.5 Hz, 2 H), 3.40 (S, 3 H), 4.26 (s, 2 H), 5.25 (t, J = 5.5 Hz, 1 H), 7.32 (d, br, J = 8 Hz), 7.41 (t, br, J = 8 Hz) 7.46 (t, br, J = 8 Hz), 7.52 (d, br, J = 8 Hz), 7.60 (t, br, J = 8 Hz), 8.02 (d, br, J = 8 Hz), 8.34 (d, br, J = 8 Hz).