Tricyclic compounds

Details Tricyclic compounds Tricyclic compounds

1982-03-09

1984-02-14

Milestone, Norma S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549349, 549 10, 549 11, 424267, C07D41104, C07D40904, C07D40704

Patent

active

044318081

ABSTRACT:
A technique is described for the preparation of a wide variety of basic derivatives of linearly condensed tricyclic systems formed by two external benzene nuclei and a 7-membered central ring having 2 chalcogen atoms as hetero atoms.
Derivatives of 11H-dibenzo(b,e)-1,4-dioxepin are obtained when the chalcogens are both oxygen atoms; derivatives of 11H-dibenzo(b,f)-1,4-dithiepin are obtained when the chalcogens are both sulfur atoms; derivatives of 6H-dibenz(b,e)-1,4-oxathiepin and 11H-dibenz(b,f)-1,4-oxathiepin are obtained with combinations of sulfur and oxygen atoms as chalcogens.

REFERENCES:
patent: 3100207 (1963-08-01), Zirkle
patent: 3501483 (1970-03-01), Howell et al.
patent: 3639423 (1972-02-01), Winter et al.

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